Merge pull request #67 from OpenDDS/dependabot/github_actions/actions…

…/checkout-4

Bump actions/checkout from 3 to 4

.github/workflows/build.yml

@@ -35,22 +35,22 @@ jobs:
 
     runs-on: ${{ matrix.m.os }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: 'Checkout MPC'
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           repository: DOCGroup/MPC
           path: MPC
           fetch-depth: 1
       - name: 'Checkout ACE_TAO'
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           repository: DOCGroup/ACE_TAO
           ref: ace6tao2
           path: ACE_TAO
           fetch-depth: 1
       - name: 'Checkout OpenDDS'
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           repository: OpenDDS/OpenDDS
           ref: ${{ matrix.opendds_branch }}