actions: Combine PR labeling jobs into a single workflow

.github/workflows/labeler.yml

@@ -1,13 +1,14 @@
-name: "Automatic Labeler"
+name: "Automatic Pull Request Labeling"
+#
+# Set labels for pull requests automatically based on size (modified via job 'label-size') and file categories (modified via .github/labeler)
+#
+
 on:
 - pull_request_target
 
-permissions:
-  contents: read
-
 jobs:
 
-  triage:
+  label-category:
     permissions:
       contents: read  # for actions/labeler to determine modified files
       pull-requests: write  # for actions/labeler to add labels to PRs
@@ -17,3 +18,21 @@ jobs:
     - uses: actions/labeler@v5
       with:
         repo-token: "${{ secrets.GITHUB_TOKEN }}"
+
+  label-size:
+    permissions:
+      contents: read  # for pascalgn/size-label-action to determine modified files
+      pull-requests: write  # for pascalgn/size-label-action to add labels to PRs
+    runs-on: ubuntu-latest
+    steps:
+      - name: size-label
+        uses: "pascalgn/[email protected]"
+        env:
+          GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
+        with:
+          sizes: >
+            {
+              "0": "small",
+              "50": "medium",
+              "250": "large"
+            }