chore(deps): update singer-sdk requirement from ~=0.43.1 to ~=0.45.3

Updates the requirements on [singer-sdk](https://github.com/meltano/sdk) to permit the latest version.
- [Release notes](https://github.com/meltano/sdk/releases)
- [Changelog](https://github.com/meltano/sdk/blob/main/CHANGELOG.md)
- [Commits](meltano/sdk@v0.43.1...v0.45.3)

---
updated-dependencies:
- dependency-name: singer-sdk
  dependency-version: 0.45.3
  dependency-type: direct:production
...

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

Author: dependabot[bot]

pyproject.toml

@@ -21,13 +21,13 @@ license = "Apache-2.0"
 
 [tool.poetry.dependencies]
 python = ">=3.9"
-singer-sdk = { version="~=0.43.1", extras = [] }
+singer-sdk = { version="~=0.45.3", extras = [] }
 fs-s3fs = { version = "~=1.1.1", optional = true }
 requests = "~=2.32.3"
 
 [tool.poetry.group.dev.dependencies]
 pytest = ">=8"
-singer-sdk = { version="~=0.43.1", extras = ["testing"] }
+singer-sdk = { version="~=0.45.3", extras = ["testing"] }
 
 [tool.poetry.extras]
 s3 = ["fs-s3fs"]