CI: Update to clang-format 13 using LLVM repo

(cherry picked from commit f42ef8d5f9b80095bcd817727a549a691495bb02)

.github/workflows/static_checks.yml

@@ -14,13 +14,15 @@ jobs:
         run: |
           sudo rm -f /etc/apt/sources.list.d/*
           sudo cp -f misc/ci/sources.list /etc/apt/sources.list
+          wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
+          sudo apt-add-repository "deb http://apt.llvm.org/focal/ llvm-toolchain-focal-13 main"
           sudo apt-get update
 
       - name: Install dependencies
         run: |
-          sudo apt-get install -qq dos2unix recode clang-format-12
+          sudo apt-get install -qq dos2unix recode clang-format-13
           sudo update-alternatives --remove-all clang-format
-          sudo update-alternatives --install /usr/bin/clang-format clang-format /usr/bin/clang-format-12 100
+          sudo update-alternatives --install /usr/bin/clang-format clang-format /usr/bin/clang-format-13 100
           sudo pip3 install black==20.8b1 pygments
 
       - name: File formatting checks (file_format.sh)

core/object.h

@@ -331,7 +331,7 @@ protected:
 		initialize_class();                                                                                                             \
 	}                                                                                                                                   \
 	_FORCE_INLINE_ bool (Object::*_get_get() const)(const StringName &p_name, Variant &) const {                                        \
-		return (bool (Object::*)(const StringName &, Variant &) const) & m_class::_get;                                                 \
+		return (bool(Object::*)(const StringName &, Variant &) const) & m_class::_get;                                                  \
 	}                                                                                                                                   \
 	virtual bool _getv(const StringName &p_name, Variant &r_ret) const {                                                                \
 		if (m_class::_get_get() != m_inherits::_get_get()) {                                                                            \
@@ -341,7 +341,7 @@ protected:
 		return m_inherits::_getv(p_name, r_ret);                                                                                        \
 	}                                                                                                                                   \
 	_FORCE_INLINE_ bool (Object::*_get_set() const)(const StringName &p_name, const Variant &p_property) {                              \
-		return (bool (Object::*)(const StringName &, const Variant &)) & m_class::_set;                                                 \
+		return (bool(Object::*)(const StringName &, const Variant &)) & m_class::_set;                                                  \
 	}                                                                                                                                   \
 	virtual bool _setv(const StringName &p_name, const Variant &p_property) {                                                           \
 		if (m_inherits::_setv(p_name, p_property))                                                                                      \
@@ -352,7 +352,7 @@ protected:
 		return false;                                                                                                                   \
 	}                                                                                                                                   \
 	_FORCE_INLINE_ void (Object::*_get_get_property_list() const)(List<PropertyInfo> * p_list) const {                                  \
-		return (void (Object::*)(List<PropertyInfo> *) const) & m_class::_get_property_list;                                            \
+		return (void(Object::*)(List<PropertyInfo> *) const) & m_class::_get_property_list;                                             \
 	}                                                                                                                                   \
 	virtual void _get_property_listv(List<PropertyInfo> *p_list, bool p_reversed) const {                                               \
 		if (!p_reversed) {                                                                                                              \
@@ -371,7 +371,7 @@ protected:
 		}                                                                                                                               \
 	}                                                                                                                                   \
 	_FORCE_INLINE_ void (Object::*_get_notification() const)(int) {                                                                     \
-		return (void (Object::*)(int)) & m_class::_notification;                                                                        \
+		return (void(Object::*)(int)) & m_class::_notification;                                                                         \
 	}                                                                                                                                   \
 	virtual void _notificationv(int p_notification, bool p_reversed) {                                                                  \
 		if (!p_reversed)                                                                                                                \