Update megalinter.yml

Enable `APPLY_FIXES` but only for PRs and only create new PRs, don't add commits to this branch...  temporarily.

.github/workflows/megalinter.yml

@@ -15,9 +15,9 @@ permissions:
 env:
   # Comment env block if you do not want to apply fixes
   # Apply linter fixes configuration
-  APPLY_FIXES: none # When active, APPLY_FIXES must also be defined as environment variable (in github/workflows/mega-linter.yml or other CI tool)
-  APPLY_FIXES_EVENT: all # Decide which event triggers application of fixes in a commit or a PR (pull_request, push, all)
-  APPLY_FIXES_MODE: commit # If APPLY_FIXES is used, defines if the fixes are directly committed (commit) or posted in a PR (pull_request)
+  APPLY_FIXES: all # When active, APPLY_FIXES must also be defined as environment variable (in github/workflows/mega-linter.yml or other CI tool)
+  APPLY_FIXES_EVENT: pull_request # Decide which event triggers application of fixes in a commit or a PR (pull_request, push, all)
+  APPLY_FIXES_MODE: pull_request # If APPLY_FIXES is used, defines if the fixes are directly committed (commit) or posted in a PR (pull_request)
 
 concurrency:
   group: ${{ github.ref }}-${{ github.workflow }}