Update pastebin example to avoid new `gen` reserved keyword; couple of typo fixes (#2975)

Handle missing `reuse` parameter correctly

Expose the SNI when possible. (#2943)

Update diesel-async to 0.6, and remove an unnecessary Sync bound (#2972)

Fix upstream breakage in TLS example.

Link directly to GitHub repo in quickstart guide.

Fix typo in requests guide: 'once' -> 'one'.

Fix new lifetime warnings.

Add 'Request::version()' to retrieve HTTP version.

Fix copies in Dockerfile in deploying guide.

Impl 'Default' for 'Config' to match docs.

Defer sqlx pool connect errors on startup.

Fix testbench mTLS tests.

Fix typo in 12-pastebin.md: 'crate' -> 'create'.

Update 'tokio-tungstenite' to 0.24, 'notify' to 7.