chore(deps): update dockerfile

[renovate-sh-app]

This PR contains the following updates:

Package	Type	Update	Change
debian	stage	digest	c85a273 -> 1caf1c7
debian	stage	digest	12ce5b9 -> 21c02c2
debian	stage	digest	b1a7414 -> 7e49091
gcr.io/distroless/nodejs22-debian12	final	digest	8929dba -> e540316
node	stage	digest	1b2479d -> dbcedd8

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Some dependencies could not be looked up. Check the Dependency Dashboard for more information.

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This PR has been generated by Renovate Bot.

[github-actions]

🐳 Docker image built and pushed to GitHub Container Registry.

You can pull it using:

# For the Node.js server:
docker pull ghcr.io/grafana/grafana-image-renderer:dev-pull-750-803400b1a36eba6c9c56f5f01fcc7ff4cea737c6
# For the Go server:
docker pull ghcr.io/grafana/grafana-image-renderer:dev-pull-750-803400b1a36eba6c9c56f5f01fcc7ff4cea737c6-golang

Warning

This is a development image and should not be used in production.
It will be automatically removed after 2 weeks.