Allow clang-format 12 in the pre-commit hook

clang-format 12's formatting is identical to clang-format 11's.

(cherry picked from commit d74413ebd006a776c87c0b00f4a265e347df87ff)

misc/hooks/pre-commit-clang-format

@@ -76,7 +76,8 @@ fi
 
 # To get consistent formatting, we recommend contributors to use the same
 # clang-format version as CI.
-RECOMMENDED_CLANG_FORMAT_MAJOR="11"
+RECOMMENDED_CLANG_FORMAT_MAJOR_MIN="11"
+RECOMMENDED_CLANG_FORMAT_MAJOR_MAX="12"
 
 if [ ! -x "$CLANG_FORMAT" ] ; then
 	message="Error: clang-format executable not found. Please install clang-format $RECOMMENDED_CLANG_FORMAT_MAJOR.x.x."
@@ -106,8 +107,8 @@ fi
 CLANG_FORMAT_VERSION="$(clang-format --version | sed "s/[^0-9\.]*\([0-9\.]*\).*/\1/")"
 CLANG_FORMAT_MAJOR="$(echo "$CLANG_FORMAT_VERSION" | cut -d. -f1)"
 
-if [ "$CLANG_FORMAT_MAJOR" != "$RECOMMENDED_CLANG_FORMAT_MAJOR" ]; then
-    echo "Warning: Your clang-format binary is the wrong version ($CLANG_FORMAT_VERSION, expected $RECOMMENDED_CLANG_FORMAT_MAJOR.x.x)."
+if [[ "$CLANG_FORMAT_MAJOR" -lt "$RECOMMENDED_CLANG_FORMAT_MAJOR_MIN" || "$CLANG_FORMAT_MAJOR" -gt "$RECOMMENDED_CLANG_FORMAT_MAJOR_MAX" ]]; then
+    echo "Warning: Your clang-format binary is the wrong version ($CLANG_FORMAT_VERSION, expected between $RECOMMENDED_CLANG_FORMAT_MAJOR_MIN.x.x and $RECOMMENDED_CLANG_FORMAT_MAJOR_MAX.x.x)."
     echo "         Consider upgrading or downgrading clang-format as formatting may not be applied correctly."
 fi