Migrate CI runners from Depot back to GitHub-hosted runners (#18347)

## Summary
- Replaces all `depot-ubuntu-24.04` runners with `ubuntu-latest`
- Replaces all `depot-ubuntu-24.04-8` runners with
`ubuntu-latest-8-cores`
- Updates storybook build cache keys in ci-front.yaml to reflect the
runner name change

Reverts the temporary Depot migration introduced in #18163 / #18179
across all 23 workflow files.

.github/workflows/ci-server.yaml

@@ -31,7 +31,7 @@ jobs:
     needs: changed-files-check
     if: needs.changed-files-check.outputs.any_changed == 'true'
     timeout-minutes: 30
-    runs-on: depot-ubuntu-24.04-8
+    runs-on: ubuntu-latest-8-cores
     services:
       postgres:
         image: twentycrm/twenty-postgres-spilo
@@ -143,7 +143,7 @@ jobs:
           key: ${{ steps.restore-server-setup-cache.outputs.cache-primary-key }}
   server-test:
     timeout-minutes: 30
-    runs-on: depot-ubuntu-24.04-8
+    runs-on: ubuntu-latest-8-cores
     needs: server-setup
     steps:
       - name: Fetch custom Github Actions and base branch history
@@ -164,7 +164,7 @@ jobs:
 
   server-integration-test:
     timeout-minutes: 30
-    runs-on: depot-ubuntu-24.04-8
+    runs-on: ubuntu-latest-8-cores
     needs: server-setup
     strategy:
       fail-fast: false
@@ -250,7 +250,7 @@ jobs:
   ci-server-status-check:
     if: always() && !cancelled()
     timeout-minutes: 5
-    runs-on: depot-ubuntu-24.04
+    runs-on: ubuntu-latest
     needs: [changed-files-check, server-setup, server-test, server-integration-test]
     steps:
       - name: Fail job if any needs failed