Bump typeguard from 4.1.5 to 4.2.1 in /spiffworkflow-backend (#1336)

Bumps [typeguard](https://github.com/agronholm/typeguard) from 4.1.5 to 4.2.1.
- [Release notes](https://github.com/agronholm/typeguard/releases)
- [Changelog](https://github.com/agronholm/typeguard/blob/master/docs/versionhistory.rst)
- [Commits](https://github.com/agronholm/typeguard/compare/4.1.5...4.2.1)

---
updated-dependencies:
- dependency-name: typeguard
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

spiffworkflow-backend/poetry.lock

@@ -3236,17 +3236,17 @@ telegram = ["requests"]
 
 [[package]]
 name = "typeguard"
-version = "4.1.5"
+version = "4.2.1"
 description = "Run-time type checker for Python"
 optional = false
 python-versions = ">=3.8"
 files = [
-    {file = "typeguard-4.1.5-py3-none-any.whl", hash = "sha256:8923e55f8873caec136c892c3bed1f676eae7be57cdb94819281b3d3bc9c0953"},
-    {file = "typeguard-4.1.5.tar.gz", hash = "sha256:ea0a113bbc111bcffc90789ebb215625c963411f7096a7e9062d4e4630c155fd"},
+    {file = "typeguard-4.2.1-py3-none-any.whl", hash = "sha256:7da3bd46e61f03e0852f8d251dcbdc2a336aa495d7daff01e092b55327796eb8"},
+    {file = "typeguard-4.2.1.tar.gz", hash = "sha256:c556a1b95948230510070ca53fa0341fb0964611bd05d598d87fb52115d65fee"},
 ]
 
 [package.dependencies]
-typing-extensions = {version = ">=4.7.0", markers = "python_version < \"3.12\""}
+typing-extensions = {version = ">=4.10.0", markers = "python_version < \"3.13\""}
 
 [package.extras]
 doc = ["Sphinx (>=7)", "packaging", "sphinx-autodoc-typehints (>=1.2.0)"]