Set shorter timeout for build job

The default timeout for a job is 6 hours, but in our case something
is probably  wrong already at 60 minutes so let's fail sooner.

Author: JonasAlfredsson

.github/workflows/build_latest.yml

@@ -18,6 +18,7 @@ on:
 jobs:
   docker_buildx_debian:
     runs-on: ubuntu-latest
+    timeout-minutes: 60
     steps:
       - name: Checkout the repository
         uses: actions/checkout@v2.3.4
@@ -51,6 +52,7 @@ jobs:
 
   docker_buildx_alpine:
     runs-on: ubuntu-latest
+    timeout-minutes: 60
     steps:
       - name: Checkout the repository
         uses: actions/checkout@v2.3.4

.github/workflows/build_tags.yml

@@ -10,6 +10,7 @@ on:
 jobs:
   docker_buildx_debian:
     runs-on: ubuntu-latest
+    timeout-minutes: 60
     steps:
       - name: Checkout the repository
         uses: actions/checkout@v2.3.4
@@ -52,6 +53,7 @@ jobs:
 
   docker_buildx_alpine:
     runs-on: ubuntu-latest
+    timeout-minutes: 60
     steps:
       - name: Checkout the repository
         uses: actions/checkout@v2.3.4