[AIRFLOW-5372] Apache license check runs locally on LICENCE changes

Licence check for RAT runs too often (every time pre-commit is modified) and it
should only be run (locally) when any of *LICEN[S|C]E* files change. We anyhow
run full check on CI so this is local optimisation (it runs too long while you
play with .pre-commit-config.yaml - and we will probably be able to detect some
problems locally as well when new modules are added.

.pre-commit-config.yaml

@@ -32,8 +32,9 @@ repos:
         name: Check if licences are OK for Apache
         entry: ./scripts/ci/ci_check_license.sh
         language: system
-        files: ^\.pre-commit-config\.yaml$
-        pass_filenames: true
+        files: ^.*LICENSE.*$|^.*LICENCE.*$
+        pass_filenames: false
+        require_serial: true
   - repo: https://github.com/potiuk/pre-commit-hooks
     rev: d5bee8590ea3405a299825e68dbfa0e1b951a2be
     hooks: