chore: update dependencies and align linting

[KristjanESPERANTO]

This updates the project dependencies, including rrule-temporal, xo, lint-staged, and moment-timezone.

The new xo version introduced a few new rules, so I addressed the resulting findings. I also used the opportunity to remove lint rules and overrides that are outdated or no longer relevant.

Summary by CodeRabbit

• Bug Fixes

  • Improved calendar parsing and normalization for recurring rules, time zones, durations, and date-only values.
  • Improved handling of time zone definitions and UNTIL values, including Microsoft and non-UTC formats.
  • Preserved correct expansion and ordering of recurring events, including edge cases around daylight-saving changes.

• Tests

  • Strengthened coverage for recurring events, time zones, alarms, component indexing, and error handling.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 9541accc-c6ef-4311-91c8-d60737f5dab6

📥 Commits

Reviewing files that changed from the base of the PR and between 50b4d7f and 3a8a96c.

⛔ Files ignored due to path filters (1)

• package-lock.json is excluded by !**/package-lock.json

📒 Files selected for processing (14)

• examples/example.js
• lib/expand-recurring-event.js
• lib/ical-parser-utils.js
• package.json
• test/advanced.test.js
• test/async-error-handling.test.js
• test/basic.test.js
• test/date-only-rrule-until.test.js
• test/expand-recurring-event.test.js
• test/extended-components.test.js
• test/google-calendar-until-bug.test.js
• test/non-utc-until.test.js
• test/polyfill-check.test.js
• test/tz-utils.test.js

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📝 Walkthrough

Walkthrough

This PR refactors iCalendar parsing and timezone normalization, simplifies recurrence expansion and example control flow, updates tooling versions and lint rules, and strengthens related regression assertions.

Changes

iCalendar recurrence maintenance

Layer / File(s)	Summary
Parser normalization and timezone lookup lib/ical-parser-utils.js, package.json	Parsing guards, boolean names, RRULE UNTIL formatting, date-only detection, and VTIMEZONE lookup are refactored; dependency versions and lint rules are updated.
Recurrence expansion and example flow lib/expand-recurring-event.js, examples/example.js	Non-recurring range checks and event filtering use early exits, and the recurrence function uses an inline default export.
Regression assertion updates test/*.test.js	Assertions for RRULEs, timezones, recurrence expansion, callbacks, components, polyfills, and error propagation are made more explicit.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Possibly related PRs

• jens-maus/node-ical#428: Modifies related RRULE UNTIL normalization and timezone conversion paths.
• jens-maus/node-ical#479: Reorganizes related VTIMEZONE resolution logic.
• jens-maus/node-ical#525: Updates the same RRULE v2 dependency area and JSBI absence test.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 33.33% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the main changes: dependency updates and linting alignment.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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