Switch to deep checkout needed for release action (#104)

softprops/action-gh-release@v1 needs the whole history (or at least until
the last tag) to create Change Log and Releases. The checkout action v3
per default only gets the latest commit, which makes the release action fail.

Add the setting for a full checkout to support release building.

.github/workflows/ci.yml

@@ -12,6 +12,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
 
       - name: Set up Go
         uses: actions/setup-go@v3