[runtime-web] chore: update Angular to v15

[michalmw]

What is the purpose of the change

Bump FE framework to the angular v15 <missing Flink jira ticket, because I don't have account>. + update dependencies (security update)

Brief change log

Update necessary dependencies.

Verifying this change

This change is a trivial rework / code cleanup without any test coverage.

Does this pull request potentially affect one of the following parts:

• Dependencies (does it add or upgrade a dependency): no
• The public API, i.e., is any changed class annotated with @Public(Evolving): no
• The serializers: no
• The runtime per-record code paths (performance sensitive): no
• Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn, - ZooKeeper: no
• The S3 file system connector: no

Documentation

Does this pull request introduce a new feature? no If yes, how is the feature documented? not applicable