Test: re-enable snapshot URL check (COMPOSER-2263)

Enumerating snapshots now works after the cleanup of EOL releases.

Fixes https://issues.redhat.com/browse/COMPOSER-2263

Signed-off-by: Tomáš Hozza <thozza@redhat.com>

.github/workflows/tests.yml

@@ -192,17 +192,16 @@ jobs:
             exit "0"
           fi
 
-  # TODO: enable again once enumerating rpmrepo does not fail anymore
-  #check-snapshots:
-  #  name: "🔍 Check for valid snapshot urls"
-  #  runs-on: ubuntu-20.04
-  #  steps:
-  #    - name: Check out code into the Go module directory
-  #      uses: actions/checkout@v4
-  #      with:
-  #        ref: ${{ github.event.pull_request.head.sha }}
-  #    - name: Check for valid snapshot urls
-  #      run: ./tools/check-snapshots --errors-only .
+  check-snapshots:
+    name: "🔍 Check for valid snapshot urls"
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Check out code into the Go module directory
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
+      - name: Check for valid snapshot urls
+        run: ./tools/check-snapshots --errors-only .
 
   check-runners:
     name: "🔍 Check for missing or unused runner repos"