[CI/Build] Limit github CI jobs based on files changed (#9928)

Signed-off-by: Russell Bryant <rbryant@redhat.com>

.github/workflows/yapf.yml

@@ -6,15 +6,22 @@ on:
   push:
     branches:
       - main
+    paths:
+      - "**/*.py"
+      - .github/workflows/yapf.yml
   pull_request:
     branches:
       - main
+    paths:
+      - "**/*.py"
+      - .github/workflows/yapf.yml
+
 jobs:
   yapf:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.12"]
     steps:
     - uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4.2.1
     - name: Set up Python ${{ matrix.python-version }}