[SDKs] Update the versions of the temurin installers from SDKMAN

[github-actions]

SDKMAN-TEMURIN.YAML

[sdkman.properties] Update the JDK8 JAVA_HOME

1 file(s) updated with "JAVA_8_HOME=$$HOME/.sdkman/candidates/java/8.0.492-tem${2}": * plugin-modernizer-core/src/main/resources/sdkman.properties

[sdkman.properties] Update the JDK8 version

1 file(s) updated with "JDK8_PACKAGE=8.0.492-tem${2}": * plugin-modernizer-core/src/main/resources/sdkman.properties

[GitPod] Update the JDK8 version for SDKMAN

changed lines [9] of file ".gitpod/Dockerfile", changed lines [15] of file "Dockerfile"

GitHub Action workflow link

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