chore!: update engines.node to minimum of 20

[hsubox76]

Node 18 is now no longer maintained by Node and is deprecated by Google Cloud as well https://cloud.google.com/functions/docs/runtime-support#node.js

Node 20 is in "maintenance" and should be a safe minimum requirement. https://nodejs.org/en/about/previous-releases

[changeset-bot]

🦋 Changeset detected

Latest commit: dc4e9ba

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 32 packages

Name	Type
@firebase/rules-unit-testing	Major
@firebase/app-check-compat	Minor
@firebase/firestore-compat	Minor
@firebase/functions-compat	Minor
@firebase/database-compat	Minor
@firebase/storage-compat	Minor
@firebase/auth-compat	Minor
@firebase/app-compat	Minor
@firebase/app-check	Minor
@firebase/component	Minor
@firebase/firestore	Minor
@firebase/functions	Minor
@firebase/database	Minor
@firebase/storage	Minor
@firebase/logger	Minor
@firebase/auth	Minor
@firebase/util	Minor
@firebase/app	Minor
@firebase/ai	Minor
firebase	Major
@firebase/analytics-compat	Patch
@firebase/installations-compat	Patch
@firebase/messaging-compat	Patch
@firebase/performance-compat	Patch
@firebase/remote-config-compat	Patch
@firebase/analytics	Patch
@firebase/data-connect	Patch
@firebase/installations	Patch
@firebase/messaging	Patch
@firebase/performance	Patch
@firebase/remote-config	Patch
@firebase/database-types	Patch

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Click here if you're a maintainer who wants to add another changeset to this PR

[google-oss-bot]

Size Report ¹

Affected Products

No changes between base commit (f11b552) and merge commit (9ea5712).

Test Logs

• Base (f11b552): https://github.com/firebase/firebase-js-sdk/actions/runs/16227224067
• Merge (9ea5712): https://github.com/firebase/firebase-js-sdk/actions/runs/16231761833

1. https://storage.googleapis.com/firebase-sdk-metric-reports/iyAN5Mg4lE.html

[google-oss-bot]

Size Analysis Report ¹

Affected Products

No changes between base commit (f11b552) and merge commit (9ea5712).

Test Logs

• Base (f11b552): https://github.com/firebase/firebase-js-sdk/actions/runs/16227224067
• Merge (9ea5712): https://github.com/firebase/firebase-js-sdk/actions/runs/16231761833

1. https://storage.googleapis.com/firebase-sdk-metric-reports/n7kVNFZbL1.html

[dlarocque]

Can you add a changeset and indicate that this is a breaking change in the title (!)

[hsubox76]

Can you add a changeset and indicate that this is a breaking change in the title (!)

Added, "chore!" looks really weird, maybe that's not the right category. Doesn't affect the build though.