chore(deps): update dependency chainguard-dev/apko to v0.30.21 (#157)

Co-authored-by: ske-renovate-ce[bot] <163154779+ske-renovate-ce[bot]@users.noreply.github.com>

Author: ske-renovate-ce[bot]

hack/tools.mk

@@ -11,7 +11,7 @@ GOLANGCI_LINT_VERSION ?= v2.6.1
 # renovate: datasource=github-releases depName=uber-go/mock
 MOCKGEN_VERSION ?= v0.6.0
 # renovate: datasource=github-releases depName=chainguard-dev/apko
-APKO_VERSION ?= v0.30.20
+APKO_VERSION ?= v0.30.21
 # renovate: datasource=github-releases depName=ko-build/ko
 KO_VERSION ?= v0.18.0