Bump the testing group across 1 directory with 3 updates (#521)

Bumps the testing group with 3 updates in the /scripts directory: [certifi](https://github.com/certifi/python-certifi), [pygithub](https://github.com/pygithub/pygithub) and [retrying](https://github.com/groodt/retrying).


Updates `certifi` from 2025.7.14 to 2025.8.3
- [Commits](certifi/python-certifi@2025.07.14...2025.08.03)

Updates `pygithub` from 2.6.1 to 2.7.0
- [Release notes](https://github.com/pygithub/pygithub/releases)
- [Changelog](https://github.com/PyGithub/PyGithub/blob/main/doc/changes.rst)
- [Commits](PyGithub/PyGithub@v2.6.1...v2.7.0)

Updates `retrying` from 1.4.1 to 1.4.2
- [Release notes](https://github.com/groodt/retrying/releases)
- [Changelog](https://github.com/groodt/retrying/blob/main/HISTORY.rst)
- [Commits](groodt/retrying@v1.4.1...v1.4.2)

---
updated-dependencies:
- dependency-name: certifi
  dependency-version: 2025.8.3
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: testing
- dependency-name: pygithub
  dependency-version: 2.7.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: testing
- dependency-name: retrying
  dependency-version: 1.4.2
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: testing
...

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

Author: dependabot[bot]

scripts/requirements.txt

@@ -1,5 +1,5 @@
 attrs==25.3.0
-certifi==2025.7.14
+certifi==2025.8.3
 chardet==5.2.0
 deepdiff==8.5.0
 gitdb==4.0.12
@@ -13,13 +13,13 @@ packaging==25.0
 parse==1.20.2
 parse-type==0.6.4
 pluggy==1.6.0
-PyGithub==2.6.1
+PyGithub==2.7.0
 pyparsing==3.2.3
 pytest==8.4.1
 pytest-bdd==8.1.0
 PyYAML==6.0.2
 requests==2.32.4
-retrying==1.4.1
+retrying==1.4.2
 semver==3.0.4
 six==1.17.0
 smmap==5.0.2