I'm unsure if the end of life: "Ends in 7 years and 11 months (31 Dec 2030)" also applies to OpenJDK 8. Please see:

• https://access.redhat.com/articles/1299013
• https://adoptium.net/de/support/
• https://adoptopenjdk.net/support.html

It seems to me that 2030 only applies to Oracle JDK.

• https://www.oracle.com/java/technologies/java-se-support-roadmap.html