Upgrade Spotless to fix npm compatibility

[dhruv9b]

Description

This pull request fixes the Spotless/Prettier build failure reported in #11997.

Spotless 6.22.0 invokes npm with the --scripts-prepend-node-path option, which is no longer supported by current npm versions and causes the build to fail with:

npm error Unknown cli flag: --scripts-prepend-node-path

This change upgrades the Spotless Gradle plugin from 6.22.0 to 8.10.1, which contains the upstream fix for this issue.

Verification

• ./gradlew :test-support:spotlessJava --rerun-tasks ✅
• ./gradlew :test-support:test --rerun-tasks ✅
• git diff --check ✅

Fixes #11997.

Summary by CodeRabbit

• Chores
  • Updated code formatting tooling across the project, examples, and smoke-test builds.
  • Enabled automated dependency updates for the formatting tooling.
  • No user-facing functionality or public APIs were changed.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Team

Run ID: 74013e02-ff77-4012-8b9d-5a777547d776

📥 Commits

Reviewing files that changed from the base of the PR and between 918f465 and c9c8997.

📒 Files selected for processing (1)

• .github/dependabot.yml

Included review availability: Your plan provides up to 8 included reviews per hour; 7 remain after this review.

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📝 Walkthrough

Walkthrough

The Gradle configurations update Spotless from 6.22.0 to 8.10.1. Dependabot can now update the Spotless dependency. The existing apply false settings remain unchanged.

Changes

Spotless plugin upgrade

Layer / File(s)	Summary
Align Spotless plugin versions and updates build.gradle, examples/build.gradle, smoke-test/build.gradle, .github/dependabot.yml	The Gradle configurations use Spotless version 8.10.1 and retain apply false. Dependabot now allows updates for com.diffplug.spotless.

Estimated code review effort: 1 (Trivial) | ~5 minutes

Merge Risk: ⚪ Minimal · up to c9c89

This updates the Spotless plugin to address the npm invocation failure and enables future Dependabot updates. The build configuration changes are aligned and present no remaining merge-blocking risk.

Suggested reviewers: eddumelendez

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly states the primary change: upgrading Spotless to resolve npm compatibility problems.
Description check	✅ Passed	The description explains the failure, identifies the unsupported npm option, describes the Spotless upgrade, references issue #11997, and lists verification steps.
Linked Issues check	✅ Passed	The changes satisfy issue #11997 by upgrading Spotless to 8.10.1 in all listed Gradle build files. The Dependabot allow-list update also addresses the documented maintenance requirement.
Out of Scope Changes check	✅ Passed	The changes are limited to the Spotless version upgrade and the related Dependabot allow-list update. No unrelated changes are present.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…

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[dhruv9b]

Hi, just wanted to follow up on this PR. If someone has a chance to review it, I’d really appreciate any feedback. Thanks!

[vpelikh]

The reason Dependabot isn't creating PRs for Spotless is the allow rule in .github/dependabot.yml for the root directory:

allow:
  - dependency-name: "com.gradle*"

This restricts updates to only dependencies starting with com.gradle, so Spotless (com.diffplug.spotless) is excluded. We should either remove the rule or add an explicit exception for Spotless.

[dhruv9b]

Thanks for catching this! I’ve updated the Dependabot configuration and added the change to this PR. 👍