ci: increase timeout

Signed-off-by: Francisco Buceta <frbuceta@gmail.com>

Author: frbuceta

.github/workflows/continuous-integration.yml

@@ -18,7 +18,7 @@ env:
 jobs:
   test:
     name: Test
-    timeout-minutes: 15
+    timeout-minutes: 20
     strategy:
       matrix:
         os: [ubuntu-latest]