ci: set test timeout to 10min (#1608)

Author: Kludex

.github/workflows/ci.yml

@@ -128,7 +128,7 @@ jobs:
   test:
     name: test on ${{ matrix.python-version }}
     runs-on: ubuntu-latest
-    timeout-minutes: 5
+    timeout-minutes: 10
     strategy:
       fail-fast: false
       matrix: