tests: Update github config to use current macos and actions/checkout, fixes #68

Author: rfay

.github/workflows/tests.yml

@@ -13,26 +13,26 @@ jobs:
   shellcheck:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - run: shellcheck ./src/*
   build:
     strategy:
       matrix:
-        os: ['macos-12', 'ubuntu-latest']
+        os: ['macos-15', 'ubuntu-latest']
     runs-on: ${{ matrix.os }}
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - run: ./script/install-bats.sh
-    
-    - uses: actions/checkout@v2
+
+    - uses: actions/checkout@v4
       with:
         repository: bats-core/bats-support
         path: bats-support
-          
+
     # set PATh to ensure we use bats from our local installation (looking at you Mac Runner!)
     - name: bats test
       run: |
         PATH="$HOME/.local/bin:$PATH"
         bats -v
-        BATS_LIB_PATH="$PWD" bats --print-output-on-failure test
+        BATS_LIB_PATH="$PWD" bats --print-output-on-failure test