chore(deps): update dependency chainguard-dev/apko to v0.19.6

tools/apko/manifest.yaml

@@ -1,6 +1,6 @@
 # yaml-language-server: $schema=https://tools.uniget.dev/schema.yaml
 name: apko
-version: "0.19.5"
+version: "0.19.6"
 check: ${binary} version 2>&1 | grep ^GitVersion | tr -s ' ' | cut -d' ' -f2 | tr -d v
 build_dependencies:
 - go