Improve git diff command to actually exclude non-documentation files …

…and use globbing for `.rst` files

.readthedocs.yml

@@ -24,7 +24,7 @@ build:
     # If there are no changes (git diff exits with 0) we force the command to return with 183.
     # This is a special exit code on Read the Docs that will cancel the build immediately.
     - |
-      if [ "$READTHEDOCS_VERSION_TYPE" = "external" ] && git diff --quiet origin/main -- docs/ src/icalender/*.py CHANGES.rst CONTRIBUTING.rst LICENSE.rst README.rst .readthedocs.yaml requirements_docs.txt;
+      if [ "$READTHEDOCS_VERSION_TYPE" = "external" ] && git diff --quiet origin/main -- . docs/ src/icalendar/*.py *.rst .readthedocs.yaml requirements_docs.txt ':!src/icalendar/fuzzing' ':!src/icalendar/tests' ':!src/icalendar/timezone';
       then
         exit 183;
       fi