ci: test out ubuntu-slim runner (#94)

Author: dsanders11

.github/workflows/semantic.yml

@@ -16,7 +16,7 @@ jobs:
       pull-requests: read  # for amannn/action-semantic-pull-request to analyze PRs
       statuses: write  # for amannn/action-semantic-pull-request to mark status of analyzed PR
     name: Validate PR Title
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-slim
     steps:
       - name: semantic-pull-request
         uses: amannn/action-semantic-pull-request@48f256284bd46cdaab1048c3721360e808335d50 # v6.1.1