Bump eclipse-temurin from 19-jre to 21-jre in /releases

[dependabot[bot]]

Bumps eclipse-temurin from 19-jre to 21-jre.

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[noevidenz]

@dependabot ignore this dependency

Versions after 19-jre no longer support the arm/v7 architecture.

[dependabot[bot]]

OK, I won't notify you about eclipse-temurin again, unless you re-open this PR.