Enable Renovate to update CRD versions (#2433)

.github/workflows/check-update-crd-reference.yaml

@@ -0,0 +1,20 @@
+# Validates the configuration for the CRD reference update script
+# in scripts/update-crd-reference
+
+name: check-update-crd-reference
+
+on:
+  push:
+    paths:
+      - scripts/update-crd-reference/*
+
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+
+      - name: Validate configuration
+        run: |
+          make update-crd-reference

Makefile

@@ -54,7 +54,6 @@ update-cluster-app-reference:
 # Generate the reference documentation for the custom resource
 # definitions (CRD) used in the Management API.
 update-crd-reference:
-	scripts/update-crd-reference/update_config.sh
 	scripts/update-crd-reference/main.sh
 
 lint: lint-markdown lint-prose validate-front-matter

renovate.json5

@@ -13,5 +13,16 @@
       ],
       versioningTemplate: '{{#if versioning}}{{{versioning}}}{{else}}semver{{/if}}',
     },
+    // Detect CRD source versions
+    {
+      customType: 'regex',
+      datasourceTemplate: 'github-tags',
+      fileMatch: ['^scripts/update-crd-reference/config\\.yaml$'],
+      matchStrings: [
+        'short_name:\\s*(?<depName>?)\\s+commit_reference:\\s*(?<currentValue>\\S+)',
+      ],
+      packageNameTemplate: 'giantswarm/{{{depName}}}',
+      versioningTemplate: 'semver-coerced',
+    },
   ],
 }