Use semver tag for goreleaser master builds (#496)

This fixes the build failures caused when the last tag fetched is for
the Helm chart, and is in the format
`pulumi-kubernetes-operator-[0-9].[0-9].[0-9]` instead of a semver tag.

Example failed run:
https://github.com/pulumi/pulumi-kubernetes-operator/actions/runs/6201701807
This PR added and removed this branch as well to trigger this workflow
to ensure that this fix works as expected before being merged.
Validation run:
https://github.com/pulumi/pulumi-kubernetes-operator/actions/runs/6238681684/job/16935042636

.github/workflows/master.yaml

@@ -24,6 +24,11 @@ jobs:
         uses: actions/setup-go@v2
         with:
           go-version: 1.19.x
+      # Get the last semver tag and use it as the version for the release. This is required as we release both Helm charts and the operator
+      # within this repository.
+      - name: Get last semver tag
+        id: semver
+        run: echo "GORELEASER_CURRENT_TAG=$(git describe --tags --match "v*" --abbrev=0)" >> $GITHUB_ENV
       - name: GoReleaser
         uses: goreleaser/goreleaser-action@v2
         with: