Increase Debian build workflow timeout to 210 minutes

This one times out when building the arm/v7 stuff, try increasing
the timeout.

Author: JonasAlfredsson

.github/workflows/build_latest.yml

@@ -18,7 +18,7 @@ on:
 jobs:
   docker_buildx_debian:
     runs-on: ubuntu-latest
-    timeout-minutes: 100
+    timeout-minutes: 210
     steps:
       - name: Run Docker on tmpfs
         uses: JonasAlfredsson/docker-on-tmpfs@v1.0.1