[incubator/schema-registry] update chart repo dependency references (#23979)

Signed-off-by: Scott Rigby <scott@r6by.com>

incubator/schema-registry/Chart.yaml

@@ -1,6 +1,6 @@
 name: schema-registry
 home: https://docs.confluent.io/current/schema-registry/docs/index.html
-version: 1.2.0
+version: 1.2.1
 appVersion: 5.0.1
 keywords:
   - confluent

incubator/schema-registry/requirements.lock

@@ -1,6 +1,6 @@
 dependencies:
 - name: kafka
-  repository: https://kubernetes-charts-incubator.storage.googleapis.com/
+  repository: https://charts.helm.sh/incubator
   version: 0.21.2
-digest: sha256:3826bd8193a2a1838ef8b5bbeb542d372830df1be4b0ffaaaf476b0a29e95f47
-generated: "2020-07-18T13:14:09.592396-04:00"
+digest: sha256:d19bc31b4c6e21092ab54321cd921d048c65f11fb768a6865adb9779e95242c0
+generated: "2020-10-30T00:43:01.899435-04:00"

incubator/schema-registry/requirements.yaml

@@ -1,5 +1,5 @@
 dependencies:
 - name: kafka
   version: 0.21.2
-  repository: https://kubernetes-charts-incubator.storage.googleapis.com/
+  repository: https://charts.helm.sh/incubator
   condition: kafka.enabled