Bump schemars from 0.8.21 to 0.8.22 in /backend

Bumps [schemars](https://github.com/GREsau/schemars) from 0.8.21 to 0.8.22.
- [Release notes](https://github.com/GREsau/schemars/releases)
- [Changelog](https://github.com/GREsau/schemars/blob/master/CHANGELOG.md)
- [Commits](https://github.com/GREsau/schemars/compare/v0.8.21...v0.8.22)

---
updated-dependencies:
- dependency-name: schemars
  dependency-version: 0.8.22
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

backend/Cargo.lock

@@ -2055,9 +2055,9 @@ dependencies = [
 
 [[package]]
 name = "schemars"
-version = "0.8.21"
+version = "0.8.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "09c024468a378b7e36765cd36702b7a90cc3cba11654f6685c8f233408e89e92"
+checksum = "3fbf2ae1b8bc8e02df939598064d22402220cd5bbcca1c76f7d6a310974d5615"
 dependencies = [
  "bytes",
  "chrono",
@@ -2071,9 +2071,9 @@ dependencies = [
 
 [[package]]
 name = "schemars_derive"
-version = "0.8.21"
+version = "0.8.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b1eee588578aff73f856ab961cd2f79e36bc45d7ded33a7562adba4667aecc0e"
+checksum = "32e265784ad618884abaea0600a9adf15393368d840e0222d101a072f3f7534d"
 dependencies = [
  "proc-macro2",
  "quote",

backend/sync_server/Cargo.toml

@@ -26,7 +26,7 @@ serde_yaml = "0.9.34"
 sqlx = { version = "0.8.3", features = ["sqlite", "runtime-tokio", "uuid", "chrono"] }
 chrono = { version = "0.4.40", features = ["serde"] }
 aide = { version = "0.13.5", features = ["axum", "axum-ws", "scalar", "axum-headers"] }
-schemars = { version = "0.8.21", features = ["chrono", "uuid1", "bytes"] }
+schemars = { version = "0.8.22", features = ["chrono", "uuid1", "bytes"] }
 tracing = "0.1.41"
 rand = "0.9.0"
 sanitize-filename = "0.6.0"