chore(deps): update dependency k0sproject/k0s to v1.28.6+k0s.0

tools/k0s/manifest.yaml

 # yaml-language-server: $schema=https://tools.uniget.dev/schema.yaml
 $schema: https://tools.uniget.dev/schema.yaml
 name: k0s
-version: "1.28.5+k0s.0"
+version: "1.28.6+k0s.0"
 check: ${binary} version
 platforms:
 - linux/amd64