18.0.0

What's Changed

• refactor!: remove support for hg sparse-profiles by @ahal in #862
• Bug 1996563 - Generate perfherder_data artifacts for jobs running fetch-content by @junngo in #855
• feat: add --develop flag to taskgraph load-task by @ahal in #860
• fix(run-task): normalize certain environment variables to use forward… by @ahal in #866
• fix(run-task): stop cleaning up fetches dir by @ahal in #867
• chore: version bump 18.0.0 by @ahal in #868

Full Changelog: 17.3.0...18.0.0