Installer updates for JDK20 for July 2023 release

[adamfarley]

Styled after the April PR

[github-actions]

A block has been put on this Pull Request as this repository is temporarily under a code freeze due to an ongoing release cycle.

If this pull request needs to be merged during the release cycle then please comment /merge and a PMC member will be able to remove the block.

If the code freeze is over you can remove this block by commenting /thaw.

[steelhead31]

LGTM

[jiekang]

Debian failing relevant log:

# Download and verify checksum of JRE
wget --progress=dot:mega -O jre.tar.gz https://github.com/adoptium/temurin20-binaries/releases/download/jdk-20.0.1%2B9/OpenJDK20U-jre_x64_linux_hotspot_20.0.2_9.tar.gz
Resolving github.com (github.com)... 140.82.113.4
Connecting to github.com (github.com)|140.82.113.4|:443... connected.
HTTP request sent, awaiting response... 404 Not Found
make[1]: Leaving directory '/home/builder/workspace/packaging'
2023-07-26 12:11:12 ERROR 404: Not Found.

[gdams]

/merge

[github-actions]

Approval to merge during the lockdown cycle

Please can two Adoptium PMC members comment /approve?

[gdams]

/approve

[smlambert]

/approve

Thank you @gdams and @smlambert for your approvals, this pull request is now approved to merge during release.