adds pact broker renovate dep updates (#192)

* adds pact broker renovate dep updates

Signed-off-by: ChrisJBurns <29541485+ChrisJBurns@users.noreply.github.com>

* readme updates

Signed-off-by: ChrisJBurns <29541485+ChrisJBurns@users.noreply.github.com>

---------

Signed-off-by: ChrisJBurns <29541485+ChrisJBurns@users.noreply.github.com>

Author: ChrisJBurns

renovate.json

@@ -2,5 +2,25 @@
   "$schema": "https://docs.renovatebot.com/renovate-schema.json",
   "extends": [
     "config:recommended"
+  ],
+  "packageRules": [
+    {
+      "description": "Configure versioning for Pact Broker Docker image",
+      "matchPackageNames": ["pactfoundation/pact-broker"],
+      "matchDatasources": ["docker"],
+      "versioning": "regex:^(?<major>\\d+)\\.(?<minor>\\d+)\\.(?<patch>\\d+)(-pactbroker(?<compatibility>.*))?$"
+    }
+  ],
+  "regexManagers": [
+    {
+      "description": "Update Pact Broker Docker image version in Helm values",
+      "fileMatch": ["^charts/pact-broker/values\\.yaml$"],
+      "matchStrings": [
+        "# -- Pact Broker image tag \\(immutable tags are recommended\\)\\s+tag:\\s+(?<currentValue>.*?)\\s"
+      ],
+      "datasourceTemplate": "docker",
+      "depNameTemplate": "pactfoundation/pact-broker",
+      "versioningTemplate": "regex:^(?<major>\\d+)\\.(?<minor>\\d+)\\.(?<patch>\\d+)(-pactbroker(?<compatibility>.*))?$"
+    }
   ]
 }