fix: packages bump

[ajasnosz]

Packages updated

Backend (backend/requirements.txt)

• click 8.3.3 → 8.4.2
• pymongo 4.6.3 → 4.17.0
• six 1.16.0 → 1.17.0
• Werkzeug 3.1.7 → 3.1.8
• gunicorn 23.0.0 → 26.1.0
• kubernetes ~26.1.0 → ~36.0.3
• argon2-cffi ~23.1 → ~25.1

Frontend — root (frontend/package.json, forced via resolutions)

• undici ^6.28.0 → ^8.10.0
• js-yaml ^4.3.1 → ^5.3.0
• nanoid ^3.3.17 → ^6.0.1
• sigstore ^4.1.1 → ^5.0.0
• @sigstore/core ^3.2.1 → ^4.0.1
• @sigstore/verify ^3.1.1 → ^4.1.2
• fast-uri ^3.1.5 → ^4.1.2

Frontend — @splunk/manager (frontend/packages/manager/package.json)

• @splunk/react-ui ^4.25.0 → ^4.47.1
• css-loader ^6.7.1 → ^7.1.4 (dependencies + devDependencies)
• style-loader ^3.3.1 → ^4.0.0
• babel-loader ^8.0.4 → ^10.1.1
• webpack ^5.0.0 → ^5.109.2
• webpack-cli ^5.0.0 → ^7.2.2
• webpack-dev-server ^5.2.3 → ^6.0.0
• @webpack-cli/serve ^2.0.0 → ^3.0.1
• html-webpack-plugin ^4.0.0 → ^5.6.8
• stylelint ^15.11.0 → ^17.14.1
• @splunk/stylelint-config ^5.0.0 → ^5.1.0
• jest ^30.3.0 → ^30.4.2
• jest-environment-jsdom ^30.3.0 → ^30.4.1
• @jest/globals ^30.3.0 → ^30.4.1
• @testing-library/dom 9.3.1 → 10.4.1
• @testing-library/jest-dom ^6.6.3 → ^6.10.0
• chai ^3.5.0 → ^6.2.2
• eslint-plugin-import ^2.22.1 → ^2.32.0
• eslint-plugin-jsx-a11y ^6.4.1 → ^6.10.2
• eslint-plugin-react ^7.21.5 → ^7.37.5