Fix the OBS release GitHub Action (#1886)

## Problem

- The GitHub publish action fails, see
https://github.com/agama-project/agama/actions/runs/12713228836

## Solution

- Update the action definition file
- Basically copies the definitions from
[obs-staging-rust.yml](https://github.com/agama-project/agama/blob/master/.github/workflows/obs-staging-rust.yml),
[obs-staging-service.yml](https://github.com/agama-project/agama/blob/master/.github/workflows/obs-staging-service.yml),
[obs-staging-web.yml](https://github.com/agama-project/agama/blob/master/.github/workflows/obs-staging-web.yml)
and
[obs-staging-products.yml](https://github.com/agama-project/agama/blob/master/.github/workflows/obs-staging-products.yml)

.github/workflows/obs-release.yml

@@ -1,5 +1,8 @@
 # Publish a new version
-# - Submit the packages to systemsmanagement:Agama:Devel
+# - Submit the packages to the OBS project defined in OBS_PROJECT_RELEASE variable
+#   at GitHub (in the original repository it is set to systemsmanagement:Agama:Release,
+#   see https://github.com/agama-project/agama/settings/variables/actions,
+#   you might change that in forks)
 # - Send submit requests
 
 name: Release
@@ -11,29 +14,35 @@ on:
       - v[0-9]*
 
 jobs:
-  # Note: agama-integration-tests and the Live ISO are currently not submitted
+  # Note: the Live ISO is currently not submitted
 
   update_rust:
     uses: ./.github/workflows/obs-staging-shared.yml
     # pass all secrets
     secrets: inherit
     with:
       install_packages: obs-service-cargo_audit obs-service-cargo_vendor
-      project_name: systemsmanagement:Agama:Devel
       package_name: agama
+      service_file: rust/package/_service
 
   update_web:
     uses: ./.github/workflows/obs-staging-shared.yml
     # pass all secrets
     secrets: inherit
     with:
       install_packages: obs-service-node_modules
-      project_name: systemsmanagement:Agama:Devel
-      package_name: cockpit-agama
+      package_name: agama-web-ui
+      service_file: web/package/_service
 
   update_service:
     uses: ./.github/workflows/obs-service-shared.yml
     # pass all secrets
     secrets: inherit
+
+  update_products:
+    uses: ./.github/workflows/obs-staging-shared.yml
+    # pass all secrets
+    secrets: inherit
     with:
-      project_name: systemsmanagement:Agama:Devel
+      package_name: agama-products
+      service_file: products.d/_service