chore: update dependencies, cod hygiene

[Klaus-Keller]

Issue

Outdated dependencies, code smells, code hygiene.

Description

• update dependencies and devDependencies to latest where possible
• avoid pnpm audit messages
• fix sonar code smells
• fix build warning for postcss in webapp

Checklist for Pull Requests

• Supplied as many details as possible on this change
• Included the link to the associated issue in the Issue section above
• The code conforms to the general development guidelines.
• The code has unit tests where applicable and is easily unit-testable
• This branch is appropriately named for the associated issue

[changeset-bot]

🦋 Changeset detected

Latest commit: 5ac8c1d

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 4 packages

Name	Type
sap-guided-answers-extension	Patch
@sap/guided-answers-extension-webapp	Patch
@sap/guided-answers-extension-core	Patch
@sap/guided-answers-extension-types	Patch

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Click here if you're a maintainer who wants to add another changeset to this PR

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

100.0% Coverage
0.0% Duplication

The version of Java (11.0.20) you have used to run this analysis is deprecated and we will stop accepting it soon. Please update to at least Java 17.
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