chore(deps): require manual deck.gl upgrades

[sadpandajoe]

SUMMARY

Exclude the coupled @deck.gl/* and @luma.gl/* package families from automated
npm updates. These dependencies span the frontend root and plugin workspaces and
are also pinned by root overrides, so they require a single manually validated
upgrade.

The master Dependabot run produced 13 npm EOVERRIDE errors while trying to
update direct dependencies whose versions are duplicated by literal overrides.
Using self-referencing overrides removes that immediate error but exposes
incompatible peer ranges across the workspaces, so it is not a safe automated
upgrade path. The ignore rules prevent these two failure families without
suppressing unrelated npm updates.

Observed failure: https://github.com/apache/superset/actions/runs/30611456387

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

Not applicable; Dependabot configuration only.

TESTING INSTRUCTIONS

• pre-commit run --files .github/dependabot.yml
• pre-commit run --all-files was run. YAML and zizmor passed; unrelated master MyPy failures plus local frontend/docs dependency gaps prevented the repository-wide command from completing cleanly.
• Reproduced the original conflict with npm install @deck.gl/core@9.3.7 --package-lock-only --dry-run=true --ignore-scripts from superset-frontend.
• Confirm the next scheduled Dependabot run completes without deck.gl/luma.gl updater errors and still proposes unrelated dependency updates.

ADDITIONAL INFORMATION

• Has associated issue:
• Required feature flags:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

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[sadpandajoe]

@rusackas hopefully this helps, but feel free to close if we think it won't be useful and only cause more issues.