merge branch 'pr-3479' into release-1.1

Kir Kolyshkin (1):
  ci: drop docker layer caching from release job

LGTMs: thaJeztah cyphar
Closes #3479

.github/workflows/validate.yml

@@ -191,8 +191,6 @@ jobs:
       # under Docker will emerge, it will be good to have a separate make
       # runcimage job and share its result (the docker image) with whoever
       # needs it.
-    - uses: satackey/[email protected]
-      continue-on-error: true
     - name: build docker image
       run: make runcimage
     - name: make releaseall