fix: cnpg supports digests now

Signed-off-by: Devin Buhl <devin@buhl.casa>

.github/renovate/customManagers.json5

@@ -27,7 +27,7 @@
       "customType": "regex",
       "description": ["Process any imageName keys in YAML files (cloudnative-pg)"],
       "fileMatch": ["(^|/)kubernetes/.+\\.ya?ml$"],
-      "matchStrings": ["imageName: (?<depName>[^\\s:]+):(?<currentValue>\\S+)"],
+      "matchStrings": ["imageName: (?<depName>[^\\s:]+):(?<currentValue>\\S+)(@(?<currentDigest>sha256:\\S+)?)"],
       "datasourceTemplate": "docker"
     }
   ]