Release 4.2.0

@bgillet

What's Changed

Reviewed and completed french translations by @bgillet in #2142
Bump @sentry/vue from 9.47.1 to 10.53.1 by @dependabot[bot] in #2138
update: German translation by @CrazyWolf13 in #2144
Added the ntfy stream widget by @alayham in #2143
Adds missing newwindow target for nav links by @lissy93 in #2149
Fix safafi large item layout by @lissy93 in #2150
Fixes image widget update cache by @lissy93 in #2152
Improved OIDC support + docs by @lissy93 in #2153
OIDC server-side token refresh by @lissy93 in #2160
Section collapse/expand on text click by @lissy93 in #2158
Search performance and reliability by @lissy93 in #2165
Re-authenticate on expired sub-pages by @lissy93 in #2167
Bump js-cookie from 3.0.5 to 3.0.7 by @dependabot[bot] in #2161
Bump vitest from 4.1.6 to 4.1.7 in the vitest group by @dependabot[bot] in #2162
Bump the minor-and-patch group across 1 directory with 5 updates by @dependabot[bot] in #2163
Fixes healthcheck widget by @lissy93 in #2170
Documentation updates by @lissy93 in #2171

Full Changelog: 4.1.0...4.2.0