gha: add guardrails timeouts to jobs

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

Author: thaJeztah

.github/workflows/build.yml

@@ -29,6 +29,7 @@ env:
 jobs:
   validate:
     runs-on: ubuntu-24.04
+    timeout-minutes: 30 # guardrails timeout for the whole job
     strategy:
       fail-fast: false
       matrix:
@@ -49,6 +50,7 @@ jobs:
 
   test:
     runs-on: ${{ matrix.os }}
+    timeout-minutes: 30 # guardrails timeout for the whole job
     strategy:
       fail-fast: false
       matrix:
@@ -124,6 +126,7 @@ jobs:
 
   test-sandboxed:
     runs-on: ubuntu-24.04
+    timeout-minutes: 30 # guardrails timeout for the whole job
     steps:
       -
         name: Set up Docker Buildx
@@ -145,6 +148,7 @@ jobs:
 
   build:
     runs-on: ubuntu-24.04
+    timeout-minutes: 30 # guardrails timeout for the whole job
     permissions:
       # required to create GitHub release
       contents: write
@@ -194,6 +198,7 @@ jobs:
 
   build-deb:
     runs-on: ubuntu-24.04
+    timeout-minutes: 30 # guardrails timeout for the whole job
     steps:
       -
         name: Checkout