OY-4695 Cleanup: update Java and library versions, add extra logging

[vaeinoe]

Minor change:

• Log the actual secret for "old or invalid secret" type errors so we can track who encountered the error

Major batch cleanup:

• Update Java to latest LTS
• Update Clojure, ClojureScript and library versions (including latest reagent / re-frame and React 17->18)
• Bump PostgreSQL to v15 in local dev env (matching forthcoming updates)
• Remove Cypress since there were no tests written, rename test scripts to "test" instead of "cypress", remove "cypressid" attributes from DOM, whoever integrates eg. Playwright will want to define their own anyway
• Convert some files with CRLF line endings to LF: makes for a harder to read diff for some files, easier to edit code later
• Remove unused UI components and dead code mainly on the frontend side

Works on my machine -tm- against untuva env zooming through basic views with an existing secret, all tests pass, builds on GH Actions.

Notes:

1. Reagent complains about reagent.dom/dom-node being deprecated in the latest version when displaying paytrail-payment-form, but it's still supported in the current version so let's leave it as is for now (the alternative solution would be to use React refs directly).
2. There may still be useless (JS / Clojure) library dependencies, some may have been originally copy-pasted from another project this is based on. Doing "conservative" cleaning (still a lot) in this PR.