fix: remove Docker container from CI, use setup-node instead

Eliminates Docker Hub rate limit by replacing container: node:22 with setup-node@v4.
Also fixes release workflow branch creation order.

Closes privilegedescalation/.github#14

Co-Authored-By: Paperclip <noreply@paperclip.ing>

.github/workflows/plugin-ci.yaml

@@ -12,13 +12,18 @@ on:
 jobs:
   ci:
     runs-on: local-ubuntu-latest
-    container: node:${{ inputs.node-version }}
     timeout-minutes: 10
 
     steps:
       - name: Checkout
         uses: actions/checkout@v4
 
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ inputs.node-version }}
+          cache: 'npm'
+
       - name: Install dependencies
         run: npm ci