ci: use tag

Author: kou

.github/workflows/linux.yml

@@ -13,7 +13,7 @@ jobs:
           - almalinux-8
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@master
+      - uses: actions/checkout@v4
       - name: Install XMLua
         run: |
           docker build \

.github/workflows/macos.yml

@@ -9,7 +9,7 @@ jobs:
       fail-fast: false
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@master
+      - uses: actions/checkout@v4
       - name: Install XMLua
         run: |
           brew update