feat(deps): Bump singer-sdk in the singer-sdk group

Bumps the singer-sdk group with 1 update: [singer-sdk](https://github.com/meltano/sdk).


Updates `singer-sdk` from 0.37.0 to 0.38.0
- [Release notes](https://github.com/meltano/sdk/releases)
- [Changelog](https://github.com/meltano/sdk/blob/main/CHANGELOG.md)
- [Commits](meltano/sdk@v0.37.0...v0.38.0)

---
updated-dependencies:
- dependency-name: singer-sdk
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: singer-sdk
...

Signed-off-by: dependabot[bot] <[email protected]>

pyproject.toml

@@ -29,12 +29,12 @@ keywords = [
 python = ">=3.8"
 colorama = "==0.4.*"
 requests-cache = "==1.2.*"
-singer-sdk = "==0.37.*"
+singer-sdk = "==0.38.*"
 structlog = "==24.2.*"
 
 [tool.poetry.group.dev.dependencies]
 pytest = "==8.*"
-singer-sdk = { version = "==0.37.*", extras = [
+singer-sdk = { version = "==0.38.*", extras = [
   "testing",
 ] }