build(deps): bump coredns/coredns in /kubernetes/system/coredns

Bumps coredns/coredns from 1.14.3 to 1.14.6.

---
updated-dependencies:
- dependency-name: coredns/coredns
  dependency-version: 1.14.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

kubernetes/system/coredns/values.yaml

@@ -1,7 +1,7 @@
 replicaCount: 2
 image:
     repository: coredns/coredns
-    tag: 1.14.3
+    tag: 1.14.6
     pullPolicy: IfNotPresent
 deployment:
     dnsPolicy: ClusterFirst
@@ -105,4 +105,4 @@ sops:
             -----END PGP MESSAGE-----
           fp: DC6910268E657FF70BA7EC289974494E76938DDC
     encrypted_regex: ^(password|value|ssh-key|api-key|user|username|privateKey|clientSecret|clientId|apiKey|extraArgs.*|.*Secret.*|extraEnvVars|.*SECRET.*|.*secret.*|key|.*Password|.*\.ya?ml)$
-    version: 3.10.2
+    version: 3.10.2