Upgrade GitHub Actions actions/checkout to v2

Author: superstructor

.github/workflows/continuous-deployment-workflow.yml

@@ -53,6 +53,9 @@ jobs:
       image: day8au/dev-ci:0.0.8
     steps:
       - uses: actions/checkout@v2
+        with:
+          # All of the Git history is required for day8/lein-git-inject to determine the version string.
+          fetch-depth: 0
       - name: Maven cache
         uses: actions/cache@v2
         with:

.github/workflows/continuous-integration-workflow.yml

@@ -8,7 +8,7 @@ jobs:
     container:
       image: day8au/dev-ci:0.0.8
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - name: Maven cache
         uses: actions/cache@v2
         with: