chore(renovate): improve Renovate config for better package grouping and parsing

Refined grouping rules for Config Baker container image dependencies and enhanced regex for version extraction. Adjusted default versioning template to prioritize semantic versioning when unspecified. These changes ensure more accurate and maintainable update tracking.

Author: poikilotherm

renovate.json5

@@ -28,10 +28,9 @@
 
     packageRules: [
         {
-            description: "Group Alpine Package Manager dependencies for the Config Baker Container Image",
-            matchFileNames: ["modules/container-configbaker/**/Dockerfile"],
-            matchDatasources: ["repology"],
-            groupName: "Config Baker Container - APK packages"
+            description: "Group package updates for the Config Baker Container Image",
+            matchFileNames: ["modules/container-configbaker/**/*[dD]ockerfile"],
+            groupName: "Config Baker Container Packages"
         },
     ],
 
@@ -44,9 +43,9 @@
                 "/(^|/)Dockerfile\\.[^/]*$/"
             ],
             matchStrings: [
-                "#\\s*renovate:\\s*datasource=(?<datasource>.*?) depName=(?<depName>.*?)\\sENV .*?_VERSION=\"(?<currentValue>.*)\"\\s"
+                "# renovate: datasource=(?<datasource>[a-zA-Z0-9-._]+?) depName=(?<depName>[^\\s]+?)(?: (lookupName|packageName)=(?<packageName>[^\\s]+?))?(?: versioning=(?<versioning>[^\\s]+?))?(?: extractVersion=(?<extractVersion>[^\\s]+?))?(?: registryUrl=(?<registryUrl>[^\\s]+?))?\\s(?:ENV|ARG)\\s+[A-Za-z0-9_]+?_VERSION[ =][\"']?(?<currentValue>.+?)[\"']?\\s"
             ],
-            versioningTemplate: "loose"
+            versioningTemplate: '{{#if versioning}}{{{versioning}}}{{else}}semver{{/if}}'
         }
     ]
 }