ci: twister: Set build job timeout to 24 hours

This commit increases the twister build job timeout from the default value
of 6 hours to 24 hours because scheduled (weekly) build runs take longer
than 6 hours to complete.

Signed-off-by: Stephanos Ioannidis <root@stephanos.io>

.github/workflows/twister.yaml

@@ -135,6 +135,7 @@ jobs:
       fail-fast: false
       matrix:
         subset: ${{fromJSON(needs.twister-build-prep.outputs.subset)}}
+    timeout-minutes: 1440
     env:
       CCACHE_DIR: /node-cache/ccache-zephyr
       CCACHE_REMOTE_STORAGE: "redis://cache-*.keydb-cache.svc.cluster.local|shards=1,2,3"