IONOS(user_oidc): switch to IONOS fork with Bearer-scheme guard (HDNEXT-2218) [v32] - #333

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: jfrog/setup-jfrog-cli@7c95feb32008765e1b4e626b078dfd897c4340ad. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/