[CI] Run gel migrations in a single transaction to prevent timeouts

Author: CarsonF

.github/actions/gel-setup/action.yml

@@ -3,8 +3,18 @@ description: 'Setup Gel server, migrate schema, generate TS files'
 runs:
   using: composite
   steps:
-    - name: Setup Gel
+    - name: Install Gel CLI
       uses: geldata/setup-gel@v1
+      with:
+        server-version: none
+
+    - name: Initialize Gel Project
+      shell: bash
+      run: gel project init --no-migrations --non-interactive
+
+    - name: Migrate Gel Schema
+      shell: bash
+      run: gel migrate --single-transaction
 
     - name: Generate Gel TS files
       shell: bash

.github/workflows/gel.yml

@@ -10,11 +10,8 @@ jobs:
       - name: Node Setup & Yarn Install
         uses: ./.github/actions/setup
 
-      - uses: geldata/setup-gel@v1
-
-      - name: Generate Gel TS files
-        shell: bash
-        run: yarn gel:gen
+      - name: Gel Setup
+        uses: ./.github/actions/gel-setup
 
       - name: Inject Access Policies
         run: yarn console gel ap inject