chore(deps): bump pytest in /lib/metric-config-parser

Bumps [pytest](https://github.com/pytest-dev/pytest) from 8.4.2 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@8.4.2...9.0.0)

---
updated-dependencies:
- dependency-name: pytest
  dependency-version: 9.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

lib/metric-config-parser/requirements.in

@@ -71,7 +71,7 @@ pydantic-core==2.41.4
     # via pydantic
 pygments==2.19.2
     # via pytest
-pytest==8.4.2
+pytest==9.0.0
     # via
     #   mozilla-metric-config-parser
     #   pytest-cov

lib/metric-config-parser/requirements.txt

@@ -597,9 +597,9 @@ pygments==2.19.2 \
     # via
     #   -r requirements.in
     #   pytest
-pytest==8.4.2 \
-    --hash=sha256:86c0d0b93306b961d58d62a4db4879f27fe25513d4b969df351abdddb3c30e01 \
-    --hash=sha256:872f880de3fc3a5bdc88a11b39c9710c3497a547cfa9320bc3c5e62fbf272e79
+pytest==9.0.0 \
+    --hash=sha256:8f44522eafe4137b0f35c9ce3072931a788a21ee40a2ed279e817d3cc16ed21e \
+    --hash=sha256:e5ccdf10b0bac554970ee88fc1a4ad0ee5d221f8ef22321f9b7e4584e19d7f96
     # via
     #   -r requirements.in
     #   pytest-cov