chore: bump the pip_dependencies group with 3 updates

Bumps the pip_dependencies group with 3 updates: [cosl](https://github.com/canonical/cos-lib), [lightkube](https://github.com/gtsystem/lightkube) and [ruff](https://github.com/astral-sh/ruff).


Updates `cosl` from 0.0.45 to 0.0.47
- [Release notes](https://github.com/canonical/cos-lib/releases)
- [Commits](canonical/cos-lib@0.0.45...0.0.47)

Updates `lightkube` from 0.15.6 to 0.15.8
- [Release notes](https://github.com/gtsystem/lightkube/releases)
- [Commits](gtsystem/lightkube@v0.15.6...v0.15.8)

Updates `ruff` from 0.8.2 to 0.8.3
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.8.2...0.8.3)

---
updated-dependencies:
- dependency-name: cosl
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: pip_dependencies
- dependency-name: lightkube
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: pip_dependencies
- dependency-name: ruff
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: pip_dependencies
...

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

requirements.txt

@@ -14,7 +14,7 @@ certifi==2024.8.30
     #   httpx
 click==8.1.7
     # via typer
-cosl==0.0.45
+cosl==0.0.47
     # via -r requirements.in
 h11==0.14.0
     # via httpcore
@@ -30,7 +30,7 @@ iniconfig==2.0.0
     # via pytest
 jinja2==3.1.4
     # via -r requirements.in
-lightkube==0.15.6
+lightkube==0.15.8
     # via
     #   -r requirements.in
     #   cosl

test-requirements.txt

@@ -148,7 +148,7 @@ requests-oauthlib==2.0.0
     # via kubernetes
 rsa==4.9
     # via google-auth
-ruff==0.8.2
+ruff==0.8.3
     # via -r test-requirements.in
 six==1.16.0
     # via