chore(deps): bump diesel from 2.2.3 to 2.2.4 in /examples (#449)

Bumps [diesel](https://github.com/diesel-rs/diesel) from 2.2.3 to 2.2.4.
- [Release notes](https://github.com/diesel-rs/diesel/releases)
- [Changelog](https://github.com/diesel-rs/diesel/blob/v2.2.4/CHANGELOG.md)
- [Commits](https://github.com/diesel-rs/diesel/compare/v2.2.3...v2.2.4)

---
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

@@ -974,9 +974,9 @@ dependencies = [
 
 [[package]]
 name = "diesel"
-version = "2.2.3"
+version = "2.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "65e13bab2796f412722112327f3e575601a3e9cdcbe426f0d30dbf43f3f5dc71"
+checksum = "158fe8e2e68695bd615d7e4f3227c0727b151330d3e253b525086c348d055d5e"
 dependencies = [
  "diesel_derives",
  "libsqlite3-sys",