chore(deps): bump diesel from 2.2.1 to 2.2.2 in /examples (#414)

Bumps [diesel](https://github.com/diesel-rs/diesel) from 2.2.1 to 2.2.2.
- [Release notes](https://github.com/diesel-rs/diesel/releases)
- [Changelog](https://github.com/diesel-rs/diesel/blob/v2.2.2/CHANGELOG.md)
- [Commits](https://github.com/diesel-rs/diesel/compare/v2.2.1...v2.2.2)

---
updated-dependencies:
- dependency-name: diesel
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

examples/Cargo.lock

@@ -992,9 +992,9 @@ dependencies = [
 
 [[package]]
 name = "diesel"
-version = "2.2.1"
+version = "2.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "62d6dcd069e7b5fe49a302411f759d4cf1cf2c27fe798ef46fb8baefc053dd2b"
+checksum = "bf97ee7261bb708fa3402fa9c17a54b70e90e3cb98afb3dc8999d5512cb03f94"
 dependencies = [
  "diesel_derives",
  "libsqlite3-sys",