Bump actions/upload-artifact from 2.2.3 to 2.2.4 (#571)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 2.2.3 to 2.2.4.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](https://github.com/actions/upload-artifact/compare/v2.2.3...v2.2.4)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/ci.yml

@@ -29,7 +29,7 @@ jobs:
           scons target=release generate_bindings=yes -j $(nproc)
 
       - name: Upload artifact
-        uses: actions/[email protected].3
+        uses: actions/[email protected].4
         with:
           name: godot-cpp-linux-glibc2.23-x86_64-release
           path: bin/libgodot-cpp.linux.release.64.a
@@ -66,7 +66,7 @@ jobs:
           scons target=release generate_bindings=yes -j $env:NUMBER_OF_PROCESSORS
 
       - name: Upload artifact
-        uses: actions/[email protected].3
+        uses: actions/[email protected].4
         with:
           name: godot-cpp-windows-msvc2019-x86_64-release
           path: bin/libgodot-cpp.windows.release.64.lib
@@ -100,7 +100,7 @@ jobs:
           scons target=release generate_bindings=yes use_mingw=yes -j $env:NUMBER_OF_PROCESSORS
 
       - name: Upload artifact
-        uses: actions/[email protected].3
+        uses: actions/[email protected].4
         with:
           name: godot-cpp-linux-mingw-x86_64-release
           path: bin/libgodot-cpp.windows.release.64.a
@@ -131,7 +131,7 @@ jobs:
           scons target=release generate_bindings=yes -j $(sysctl -n hw.logicalcpu)
 
       - name: Upload artifact
-        uses: actions/[email protected].3
+        uses: actions/[email protected].4
         with:
           name: godot-cpp-macos-x86_64-release
           path: bin/libgodot-cpp.osx.release.64.a