build(deps): bump github.com/twmb/franz-go in /src/go/k8s

Bumps [github.com/twmb/franz-go](https://github.com/twmb/franz-go) from 1.14.3 to 1.15.0.
- [Changelog](https://github.com/twmb/franz-go/blob/master/CHANGELOG.md)
- [Commits](twmb/franz-go@v1.14.3...v1.15.0)

---
updated-dependencies:
- dependency-name: github.com/twmb/franz-go
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
(cherry picked from commit c4bb946)

src/go/k8s/go.mod

@@ -30,7 +30,7 @@ require (
 	github.com/stretchr/testify v1.8.4
 	github.com/testcontainers/testcontainers-go v0.20.0
 	github.com/testcontainers/testcontainers-go/modules/redpanda v0.20.0
-	github.com/twmb/franz-go v1.14.3
+	github.com/twmb/franz-go v1.15.0
 	github.com/twmb/franz-go/pkg/kadm v1.9.0
 	github.com/twmb/franz-go/pkg/kmsg v1.6.1
 	github.com/twmb/franz-go/pkg/sasl/kerberos v1.1.0

src/go/k8s/go.sum

@@ -1983,8 +1983,8 @@ github.com/tmc/grpc-websocket-proxy v0.0.0-20190109142713-0ad062ec5ee5/go.mod h1
 github.com/transparency-dev/merkle v0.0.2 h1:Q9nBoQcZcgPamMkGn7ghV8XiTZ/kRxn1yCG81+twTK4=
 github.com/transparency-dev/merkle v0.0.2/go.mod h1:pqSy+OXefQ1EDUVmAJ8MUhHB9TXGuzVAT58PqBoHz1A=
 github.com/twmb/franz-go v1.7.0/go.mod h1:PMze0jNfNghhih2XHbkmTFykbMF5sJqmNJB31DOOzro=
-github.com/twmb/franz-go v1.14.3 h1:cq8rxAnVYU1uF3SRVn8eEaUf+AaXKWlB0Cl3Ca7JSa4=
-github.com/twmb/franz-go v1.14.3/go.mod h1:nMAvTC2kHtK+ceaSHeHm4dlxC78389M/1DjpOswEgu4=
+github.com/twmb/franz-go v1.15.0 h1:bw5n1COKJzWpkCXG/kMtHrurcS9HSWV6e3If5CUdc+M=
+github.com/twmb/franz-go v1.15.0/go.mod h1:nMAvTC2kHtK+ceaSHeHm4dlxC78389M/1DjpOswEgu4=
 github.com/twmb/franz-go/pkg/kadm v1.9.0 h1:UgwBu0YCd6P8HLdg6ZRA4v9W6/zoI1042fOd2CvvLBE=
 github.com/twmb/franz-go/pkg/kadm v1.9.0/go.mod h1:eG3f+GHUndq1CUSVvjp+WdNq5zePeJi3tEHzyTkao6g=
 github.com/twmb/franz-go/pkg/kmsg v1.2.0/go.mod h1:SxG/xJKhgPu25SamAq0rrucfp7lbzCpEXOC+vH/ELrY=