format(renovate): simplify regex patterns in config

- use glob pattern instead of regex where possible

.renovaterc.json

@@ -7,8 +7,8 @@
     {
       "customType": "regex",
       "description": "k3s",
-      "fileMatch": [
-        "playbook\\.yml"
+      "managerFilePatterns": [
+        "playbook.yml"
       ],
       "matchStrings": [
         "\\s+k3s_version:\\s(?<currentValue>.*)"
@@ -19,13 +19,13 @@
     {
       "customType": "regex",
       "description": "ArgoCD",
-      "fileMatch": [
-        "^argocd-bootstrap/.*\\.yml$"
+      "managerFilePatterns": [
+        "argocd-bootstrap/*.yml"
       ],
       "matchStrings": [
-       "\\s+chart:\\s(?<depName>.*)",
-       "\\s+repo:\\s(?<registryUrl>.*)",
-       "\\s+version:\\s(?<currentValue>.*)"
+        "\\s+chart:\\s(?<depName>.*)",
+        "\\s+repo:\\s(?<registryUrl>.*)",
+        "\\s+version:\\s(?<currentValue>.*)"
       ],
       "matchStringsStrategy": "combination",
       "datasourceTemplate": "helm"
@@ -33,8 +33,8 @@
     {
       "customType": "regex",
       "description": "Baseline Manifests",
-      "fileMatch": [
-        "\\.jsonnet$"
+      "managerFilePatterns": [
+        "*.jsonnet"
       ],
       "matchStrings": [
         "\\s+chart::\\s\\\"(?<depName>.*)\\\",",