Fix base ref for PR triggers

Author: Octogonapus

.github/workflows/generate_bindings.yml

@@ -29,11 +29,22 @@ jobs:
       - name: Run the generator
         run: ./gen/generate.sh
 
-      - name: Create Pull Request
+      - name: Create Pull Request (on push)
         uses: peter-evans/create-pull-request@v6
         with:
           commit-message: "Regenerate bindings"
           title: "Regenerate bindings"
           reviewers: |
             quinnj
             Octogonapus
+
+      - name: Create Pull Request (on PR)
+        if: ${{ github.event_name == 'pull_request' }}
+        uses: peter-evans/create-pull-request@v6
+        with:
+          base: ${{ github.head_ref }}
+          commit-message: "Regenerate bindings"
+          title: "Regenerate bindings"
+          reviewers: |
+            quinnj
+            Octogonapus