ci: set timeout

Author: kou

.github/workflows/linux.yml

@@ -12,6 +12,7 @@ jobs:
           - centos-7
           - almalinux-8
     runs-on: ubuntu-latest
+    timeout-minutes: 5
     steps:
       - uses: actions/checkout@v4
       - name: Install XMLua

.github/workflows/macos.yml

@@ -8,6 +8,7 @@ jobs:
     strategy:
       fail-fast: false
     runs-on: macos-latest
+    timeout-minutes: 5
     steps:
       - uses: actions/checkout@v4
       - name: Install XMLua