Increase time for constraints generation (apache#27534)

In case we have some new versions of dependencies released, generation
of the constraints (especially for PyPI-released providers) might
take more time than usual. Increasing time for the constraint generation
will help to handle those cases (note that once constraint generation
succeeds, the constraints will be committed to repository and next time
constraint generation should be faster.

.github/workflows/ci.yml

@@ -1125,7 +1125,7 @@ jobs:
   constraints:
     permissions:
       contents: write
-    timeout-minutes: 40
+    timeout-minutes: 80
     name: "Constraints"
     runs-on: "${{needs.build-info.outputs.runs-on}}"
     needs: