Add reasonable timeouts to all workflows (#7499)

Turns out the default timeout for github actions is 6 hours (!). This PR
sets some reasonable default for all workflows, the ones invoking cargo
in some way are limited to 60 minutes and the remaining ones to
10-15mins.

.github/workflows/png_only_on_lfs.yml

@@ -5,6 +5,7 @@ on: [push, pull_request]
 jobs:
   check-binary-files:
     runs-on: ubuntu-latest
+    timeout-minutes: 10
 
     steps:
     - name: Checkout repository