Bump swc_ecma_ast from 0.90.2 to 0.90.3 in /backend (#390)

Bumps [swc_ecma_ast](https://github.com/swc-project/swc) from 0.90.2 to 0.90.3.
- [Release notes](https://github.com/swc-project/swc/releases)
- [Changelog](https://github.com/swc-project/swc/blob/main/CHANGELOG.md)
- [Commits](https://github.com/swc-project/swc/commits)

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

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backend/Cargo.lock

@@ -3449,9 +3449,9 @@ dependencies = [
 
 [[package]]
 name = "swc_ecma_ast"
-version = "0.90.2"
+version = "0.90.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e27006a6511d27b8ce9245495df99fb3c7634f332a1b7a9ffb0511b69c5f232"
+checksum = "195cc62d3256844148ac4096e3a8901a758fe50c6237c647ebfc1e6605b67f27"
 dependencies = [
  "bitflags",
  "is-macro",