ci: update pytest requirement from <9.0.0,>=8.0.0 to >=8.0.0,<10.0.0 in the dev-dependencies group (strands-agents#1161)

* ci: update pytest requirement in the dev-dependencies group

Updates the requirements on [pytest](https://github.com/pytest-dev/pytest) to permit the latest version.

Updates `pytest` to 9.0.0
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@8.0.0...9.0.0)

---
updated-dependencies:
- dependency-name: pytest
  dependency-version: 9.0.0
  dependency-type: direct:development
  dependency-group: dev-dependencies
...

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

* bump pytest version floor

---------

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

Author: dependabot[bot]

pyproject.toml

@@ -88,7 +88,7 @@ dev = [
     "moto>=5.1.0,<6.0.0",
     "mypy>=1.15.0,<2.0.0",
     "pre-commit>=3.2.0,<4.6.0",
-    "pytest>=8.0.0,<9.0.0",
+    "pytest>=9.0.0,<10.0.0",
     "pytest-cov>=7.0.0,<8.0.0",
     "pytest-asyncio>=1.0.0,<1.4.0",
     "pytest-xdist>=3.0.0,<4.0.0",
@@ -142,7 +142,7 @@ installer = "uv"
 features = ["all"]
 extra-args = ["-n", "auto", "-vv"]
 dependencies = [
-    "pytest>=8.0.0,<9.0.0",
+    "pytest>=9.0.0,<10.0.0",
     "pytest-cov>=7.0.0,<8.0.0",
     "pytest-asyncio>=1.0.0,<1.4.0",
     "pytest-xdist>=3.0.0,<4.0.0",