Disable deployments for release env (#7033)

As according to the docs:
https://docs.github.com/en/actions/how-tos/deploy/configure-and-manage-deployments/control-deployments#using-environments-without-deployments

This is useful when you want to use environments for:

Organizing secrets—group related secrets under an environment name without creating deployment records.
Access control—restrict which branches can use certain secrets via environment branch policies, without deployment tracking.
CI and testing jobs—reference an environment for its configuration without adding noise to the deployment history.

.github/workflows/release.yml

@@ -38,7 +38,9 @@ jobs:
   docker-build:
     name: Build Vaultwarden containers
     if: ${{ github.repository == 'dani-garcia/vaultwarden' }}
-    environment: release
+    environment: 
+      name: release
+      deployment: false
     permissions:
       packages: write # Needed to upload packages and artifacts
       contents: read
@@ -249,7 +251,9 @@ jobs:
     name: Merge manifests
     runs-on: ubuntu-latest
     needs: docker-build
-    environment: release
+    environment: 
+      name: release
+      deployment: false
     permissions:
       packages: write # Needed to upload packages and artifacts
       attestations: write # Needed to generate an artifact attestation for a build