Bump chrono from 0.4.38 to 0.4.40 in /backend

Bumps [chrono](https://github.com/chronotope/chrono) from 0.4.38 to 0.4.40.
- [Release notes](https://github.com/chronotope/chrono/releases)
- [Changelog](https://github.com/chronotope/chrono/blob/main/CHANGELOG.md)
- [Commits](https://github.com/chronotope/chrono/compare/v0.4.38...v0.4.40)

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

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

backend/Cargo.lock

@@ -386,9 +386,9 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "chrono"
-version = "0.4.38"
+version = "0.4.40"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a21f936df1771bf62b77f047b726c4625ff2e8aa607c01ec06e5a05bd8463401"
+checksum = "1a7964611d71df112cb1730f2ee67324fcf4d0fc6606acbbe9bfe06df124637c"
 dependencies = [
  "android-tzdata",
  "iana-time-zone",
@@ -396,7 +396,7 @@ dependencies = [
  "num-traits",
  "serde",
  "wasm-bindgen",
- "windows-targets 0.52.6",
+ "windows-link",
 ]
 
 [[package]]
@@ -3028,6 +3028,12 @@ dependencies = [
  "windows-targets 0.52.6",
 ]
 
+[[package]]
+name = "windows-link"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "76840935b766e1b0a05c0066835fb9ec80071d4c09a16f6bd5f7e655e3c14c38"
+
 [[package]]
 name = "windows-sys"
 version = "0.48.0"

backend/sync_server/Cargo.toml

@@ -25,7 +25,7 @@ tower-http = { version = "0.6.1", features = ["cors", "trace", "limit"] }
 tracing-subscriber = { version = "0.3.19", features = ["fmt", "env-filter"]}
 serde_yaml = "0.9.34"
 sqlx = { version = "0.8.2", features = ["sqlite", "runtime-tokio", "uuid", "chrono"] }
-chrono = { version = "0.4.38", features = ["serde"] }
+chrono = { version = "0.4.40", features = ["serde"] }
 aide = { version = "0.13.4", features = ["axum", "axum-ws", "scalar", "axum-headers"] }
 schemars = { version = "0.8.21", features = ["chrono", "uuid1", "bytes"] }
 tracing = "0.1.41"