doc(maintainers): update maintainers in Chart.yaml (#282)

Author: tuunit

.github/renovate.json5

@@ -6,6 +6,7 @@
   automerge: false,
   assignees: [
     'pierluigilenoci',
+    'tuunit',
   ],
   schedule: [
     'before 5am',

helm/oauth2-proxy/Chart.yaml

@@ -22,15 +22,12 @@ sources:
   - https://github.com/oauth2-proxy/oauth2-proxy
   - https://github.com/oauth2-proxy/manifests
 maintainers:
-  - name: desaintmartin
-    email: [email protected]
-  - name: tlawrie
-  - name: NickMeves
-    email: [email protected]
-  - name: JoelSpeed
-    email: [email protected]
   - name: pierluigilenoci
     email: [email protected]
+  - name: tuunit
+    email: [email protected]
+  - name: JoelSpeed
+    email: [email protected]
 kubeVersion: ">=1.16.0-0"
 annotations:
   artifacthub.io/changes: |