Add all README.* files to paths-ignore (#12003)

Within the entire repository these are documentation files and CI don't
need to run when they are changed.

This now includes also README.REDIST.BINS, README.md, and similar README
files within the sapi and ext directories.

README files in tests directories are also only for internals
documentations purposes.

.github/workflows/push.yml

@@ -6,7 +6,7 @@ on:
       - NEWS
       - UPGRADING
       - UPGRADING.INTERNALS
-      - README.md
+      - '**/README.*'
       - CONTRIBUTING.md
       - CODING_STANDARDS.md
     branches:
@@ -21,7 +21,7 @@ on:
       - NEWS
       - UPGRADING
       - UPGRADING.INTERNALS
-      - README.md
+      - '**/README.*'
       - CONTRIBUTING.md
       - CODING_STANDARDS.md
     branches: