Add action to shift the 'latest' tag after a successful build.

.github/workflows/latest.yaml

@@ -0,0 +1,61 @@
+name: Publish latest
+
+on:
+  workflow_run:
+    workflows: [Unit tests]
+    types:
+      - completed
+  workflow_dispatch:
+
+jobs:
+  latest:
+    runs-on: ubuntu-latest
+    if: ${{ github.event.workflow_run.conclusion == 'success' }}
+    steps:
+      - name: Create or update latest
+        uses: actions/github-script@v7
+        with:
+          script: |
+            github.rest.git.createRef({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              ref: 'refs/tags/latest'
+              sha: context.sha
+            }).catch(err => {
+              if (err.status !== 422) throw err;
+              github.rest.git.updateRef({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                ref: 'tags/latest'
+                sha: context.sha
+              });
+            })
+
+      - name: Create latest release
+        uses: softprops/action-gh-release@v1
+        with:
+          name: 'latest'
+          tag_name: 'ref/tags/latest'
+
+  publish:
+    runs-on: ubuntu-latest
+    needs: create-latest
+    strategy:
+      matrix:
+        os: [ linux, darwin ]
+        arch: [ amd64, arm64 ]
+
+    steps:
+      - name: Check out
+        uses: actions/checkout@v4
+
+      - name: Publish binaries
+        uses: wangyoucao577/go-release-action@v1
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          goos: ${{ matrix.os }}
+          goarch: ${{ matrix.arch }}
+          release_tag: latest
+          asset_name: SewerRat-${{ matrix.os }}-${{ matrix.arch }}
+          overwrite: true
+          compress_assets: false