chore(helm): update image docker.io/pepperlabs/peppermint digest to 8605426 (#29033)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| docker.io/pepperlabs/peppermint | digest | `c640457` -> `8605426` |

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charts/incubator/peppermint/Chart.yaml

@@ -33,4 +33,4 @@ sources:
   - https://github.com/truecharts/charts/tree/master/charts/incubator/peppermint
   - https://hub.docker.com/r/pepperlabs/peppermint
 type: application
-version: 2.2.20
+version: 2.2.21

charts/incubator/peppermint/values.yaml

@@ -1,7 +1,7 @@
 image:
   repository: docker.io/pepperlabs/peppermint
   pullPolicy: IfNotPresent
-  tag: latest@sha256:c64045788ccc295f3722148a137c6c7485196e856cf39cedf2f6c0e084015a4f
+  tag: latest@sha256:86054262ac3f21c7fdd9580319565ee6ffbf414ed3e515cd29755eab069d25a9
 
 securityContext:
   container: