fix: also support extracting _tag variables

.github/renovate.json

@@ -7,7 +7,7 @@
 		{
 			"fileMatch": [".*y[a]?ml$"],
 			"matchStrings": [
-				"# renovate: datasource=(?<datasource>[a-z-.]+?) depName=(?<depName>[^\\s]+?)(?: (?:lookupName|packageName)=(?<packageName>[^\\s]+?))?(?: versioning=(?<versioning>[a-z-0-9]+?))?\\s+[A-Za-z0-9_]+?_version\\s*:\\s*[\"']?(?<currentValue>.+?)[\"']?\\s"
+				"# renovate: datasource=(?<datasource>[a-z-.]+?) depName=(?<depName>[^\\s]+?)(?: (?:lookupName|packageName)=(?<packageName>[^\\s]+?))?(?: versioning=(?<versioning>[a-z-0-9]+?))?\\s+[A-Za-z0-9_]+?(?:_version|_tag)\\s*:\\s*[\"']?(?<currentValue>.+?)[\"']?\\s"
 			]
 		}
 	]