Merge pull request #50 from dchesterton/dependabot/github_actions/actions/checkout-2.4.0

[ci skip]: Bump actions/checkout from 2.3.5 to 2.4.0

.github/workflows/publish.yml

@@ -12,7 +12,7 @@ jobs:
         runs-on: ubuntu-20.04
         steps:
             - name: Checkout code
-              uses: actions/checkout@v2.3.5
+              uses: actions/checkout@v2.4.0
             - name: Bump version
               uses: chamini2/bump-version@js
               id: version
@@ -22,7 +22,7 @@ jobs:
               env:
                   GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
             - name: Checkout code
-              uses: actions/checkout@v2.3.5
+              uses: actions/checkout@v2.4.0
               with:
                   ref: main
             - name: Set up QEMU