test: use CNPG released versions instead of testing release branches

.github/workflows/bake_targets.yml

@@ -114,14 +114,24 @@ jobs:
     outputs:
       versions: ${{ steps.versions.outputs.versions }}
     steps:
-      # main plus the latest and previous supported minor release branches.
+      # main plus the latest released patch of the latest and previous supported minors.
       - name: Compute CNPG release matrix
         id: versions
         env:
-          # renovate: datasource=github-tags depName=cloudnative-pg/cloudnative-pg versioning=semver-coerced extractVersion=^v(?<version>\d+\.\d+)\.\d+$
-          LATEST_RELEASE: "1.30"
+          # renovate: datasource=github-tags depName=cloudnative-pg/cloudnative-pg versioning=semver-coerced extractVersion=^v(?<version>\d+\.\d+\.\d+)$
+          LATEST_RELEASE: "1.30.1"
         run: |
-          PREVIOUS_RELEASE=$(awk -F. '{print $1"."$2-1}' <<< "$LATEST_RELEASE")
+          LATEST_MINOR="${LATEST_RELEASE%.*}"
+          PREVIOUS_MINOR=$(awk -F. '{print $1"."$2-1}' <<< "$LATEST_MINOR")
+          # Highest stable patch release of the previous minor
+          PREVIOUS_RELEASE=$(git ls-remote --tags --refs https://github.com/cloudnative-pg/cloudnative-pg "refs/tags/v${PREVIOUS_MINOR}.*" \
+            | sed 's|.*refs/tags/v||' \
+            | grep -E "^${PREVIOUS_MINOR//./\\.}\.[0-9]+$" \
+            | sort -V | tail -n1)
+          if [ -z "$PREVIOUS_RELEASE" ]; then
+            echo "No release found for CNPG ${PREVIOUS_MINOR}" >&2
+            exit 1
+          fi
           versions=$(jq -cn --arg latest "$LATEST_RELEASE" --arg previous "$PREVIOUS_RELEASE" \
             '["main", $previous, $latest]')
           echo "versions=$versions" >> "$GITHUB_OUTPUT"

Taskfile.yml

@@ -24,8 +24,8 @@ vars:
   KIND_NODE_VERSION: v1.37.0@sha256:a1ed56cfb0e7b93589bdf97c8cd566405a265939e3620fc4f5de89adff580ae5
   K8S_VERSION: '{{ regexReplaceAll "^v([0-9.]+).*" .KIND_NODE_VERSION "$1" }}'
   KIND_CLUSTER_NAME: pg-extensions-{{ .K8S_VERSION }}
-  # renovate: datasource=github-tags depName=cloudnative-pg/cloudnative-pg versioning=semver-coerced extractVersion=^v(?<version>\d+\.\d+)\.\d+$
-  CNPG_RELEASE_DEFAULT: '1.30'
+  # renovate: datasource=github-tags depName=cloudnative-pg/cloudnative-pg versioning=semver-coerced extractVersion=^v(?<version>\d+\.\d+\.\d+)$
+  CNPG_RELEASE_DEFAULT: '1.30.1'
 
   DOCKER_SOCKET:
     sh: docker context inspect -f {{`'{{json .Endpoints.docker.Host}}'`}} $(docker context show)
@@ -308,10 +308,14 @@ tasks:
       KUBECTL_VERSION: 1.37.1@sha256:b57b3bd3cd9f4f02dd444281857126aa78efa4b7b7e6ec57579dd927bf146fc3
       CNPG_MANIFEST:
         sh: |
-          if [ "{{ .CNPG_RELEASE }}" = "main" ]; then
+          release="{{ .CNPG_RELEASE }}"
+          if [ "${release}" = "main" ]; then
             echo "https://raw.githubusercontent.com/cloudnative-pg/artifacts/main/manifests/operator-manifest.yaml"
+          elif echo "${release}" | grep -Eq '^[0-9]+\.[0-9]+\.[0-9]+$'; then
+            echo "https://raw.githubusercontent.com/cloudnative-pg/cloudnative-pg/release-${release%.*}/releases/cnpg-${release}.yaml"
           else
-            echo "https://raw.githubusercontent.com/cloudnative-pg/artifacts/release-{{ .CNPG_RELEASE }}/manifests/operator-manifest.yaml"
+            echo "CNPG_RELEASE must be 'main' or a full version like 1.30.1, got '${release}'" >&2
+            exit 1
           fi
     env:
       _EXPERIMENTAL_DAGGER_RUNNER_HOST: container://{{ .DAGGER_ENGINE_NAME }}