Revert "Disable Python 3.9 and 3.10 in linting job on CI"

This reverts commit ea58c66.

Author: caleb531

.github/workflows/lint.yml

@@ -15,7 +15,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.11", "3.12", "3.13"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
 
     steps:
       - uses: actions/checkout@v3