ci(pre-commit): add hook mixed-line-endings --fix=lf (#37496)

If a file has mixed line endings, the pre-commit bot will automatically normalize it to use LF line endings.

Co-authored-by: Julian Berman <Julian@GrayVines.com>

Author: SnirBroshi

.pre-commit-config.yaml

@@ -10,3 +10,5 @@ repos:
     hooks:
       - id: trailing-whitespace
       - id: end-of-file-fixer
+      - id: mixed-line-ending
+        args: [--fix=lf]