Remove depot runner usage (#31)

Author: matthewelwell

.github/workflows/conventional-commit.yml

@@ -9,7 +9,7 @@ on:
 jobs:
   conventional-commit:
     name: Conventional Commit
-    runs-on: depot-ubuntu-latest
+    runs-on: ubuntu-latest
     steps:
       - name: Check PR Conventional Commit title
         uses: amannn/action-semantic-pull-request@v5