chore(deps): bump the pip-version-updates group across 1 directory with 5 updates

Updates the requirements on [cryptography](https://github.com/pyca/cryptography), [testcontainers](https://github.com/testcontainers/testcontainers-python), [python-dotenv](https://github.com/theskumar/python-dotenv), [sphinx](https://github.com/sphinx-doc/sphinx) and [fawltydeps](https://github.com/tweag/FawltyDeps) to permit the latest version.

Updates `cryptography` to 46.0.3
- [Changelog](https://github.com/pyca/cryptography/blob/main/CHANGELOG.rst)
- [Commits](pyca/cryptography@44.0.1...46.0.3)

Updates `testcontainers` from 3.7.1 to 4.13.3
- [Release notes](https://github.com/testcontainers/testcontainers-python/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-python/blob/main/CHANGELOG.md)
- [Commits](testcontainers/testcontainers-python@v3.7.1...testcontainers-v4.13.3)

Updates `python-dotenv` from 1.1.1 to 1.2.1
- [Release notes](https://github.com/theskumar/python-dotenv/releases)
- [Changelog](https://github.com/theskumar/python-dotenv/blob/main/CHANGELOG.md)
- [Commits](theskumar/python-dotenv@v1.1.1...v1.2.1)

Updates `sphinx` from 7.4.7 to 8.1.3
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/v8.1.3/CHANGES.rst)
- [Commits](sphinx-doc/sphinx@v7.4.7...v8.1.3)

Updates `fawltydeps` from 0.19.0 to 0.20.0
- [Release notes](https://github.com/tweag/FawltyDeps/releases)
- [Commits](tweag/FawltyDeps@v0.19.0...v0.20.0)

---
updated-dependencies:
- dependency-name: cryptography
  dependency-version: 46.0.3
  dependency-type: direct:production
  dependency-group: pip-version-updates
- dependency-name: testcontainers
  dependency-version: 4.13.3
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: pip-version-updates
- dependency-name: python-dotenv
  dependency-version: 1.2.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: pip-version-updates
- dependency-name: sphinx
  dependency-version: 8.1.3
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: pip-version-updates
- dependency-name: fawltydeps
  dependency-version: 0.20.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: pip-version-updates
...

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

Author: dependabot[bot]

pyproject.toml

@@ -18,7 +18,7 @@ dependencies = [
   "pydantic>=2",
   "typing-extensions>=4.7.1",
   "authlib>=1.3.2,<2.0.0",
-  "cryptography>=44.0.1,<45.0.0",
+  "cryptography>=44.0.1,<47.0.0",
   "requests>=2.32.4,<3.0.0",
 ]
 
@@ -34,11 +34,11 @@ dev = [
   "pytest-cov>=2.8.1",
   "tox>=3.9.0",
   "types-python-dateutil>=2.8.19.14",
-  "testcontainers==3.7.1",
-  "python-dotenv==1.1.1",
+  "testcontainers==4.14.0",
+  "python-dotenv==1.2.1",
   "ruff>=0.12.4",
-  "sphinx==7.4.7",
-  "fawltydeps==0.19.0",
+  "sphinx==8.1.3",
+  "fawltydeps==0.20.0",
   "tomlkit>=0.13.3",
   "ty>=0.0.4",
 ]