chore(deps): update dependency golangci-lint to v2.6.0

Author: renovate[bot]

mise.toml

@@ -2,7 +2,7 @@
 node = "24"
 pnpm = "10"
 go = "1.25.3"
-golangci-lint = "2.5.0"
+golangci-lint = "2.6.0"
 "ubi:kubernetes-sigs/controller-tools" = { version = "v0.19.0", exe = "controller-gen" }
 helm = "3"