.github/workflows: Disable checking of executable bit on shell scripts

Some shell scripts may just be included (`source`) in other shell
scripts and don't require execution permission.

Signed-off-by: Razvan Deaconescu <razvan.deaconescu@upb.ro>

.github/workflows/super-linter.yml

@@ -21,6 +21,7 @@ jobs:
           VALIDATE_ALL_CODEBASE: false
           VALIDATE_GITHUB_ACTIONS: false
           VALIDATE_CLANG_FORMAT: false
+          VALIDATE_BASH_EXEC: false
           LINTER_RULES_PATH: /.github/workflows/
           MARKDOWN_CONFIG_FILE: config/config.json
           MARKDOWN_CUSTOM_RULE_GLOBS: rules/rules.js