Update GitHub Actions workflow to support main branch and Python 3.12

.github/workflows/validate-catalog.yaml

@@ -3,8 +3,11 @@ name: catalog
 on:
   pull_request:
     branches:
+      - main
   push:
     branches:
+      - main
+  workflow_dispatch:
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
@@ -20,11 +23,16 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v4
         with:
-          python-version: "3.10"
-      - name: validate feedstock entry
+          python-version: "3.12"
+      - name: validate feedstock entry and generate catalog
         uses: leap-stc/data-catalog-actions/leap-catalog@main
         with:
-          single-feedstock: "./feedstock/catalog.yaml"
+          generation-single: "./feedstock/catalog.yaml"
+          output-directory: "./catalog"
+
+      - name: Commit changes
+        run: |
+          cat catalog/output/consolidated-web-catalog.json | jq
 
       # - name: Dispatch event
       #   uses: actions/github-script@v4