v2.199.0

What's Changed

• build(deps): bump cmake from 0.1.49 to 0.1.50 by @dependabot in #2365
• outbound: handle Opaque protocol hints on endpoints by @hawkw in #2237
• build(deps): bump h2 to v0.3.18 by @hawkw in #2394

Full Changelog: release/v2.198.1...release/v2.199.0