add deprecation notice to casks

[gdams]

After making all changes to the cask:

• brew cask audit --download {{cask_file}} is error-free.
• brew cask style --fix {{cask_file}} reports no offenses.
• The commit message includes the cask’s name and version.

[gdams]

Keeping in draft until I know the strategy for openj9 casks

[drothmaler]

Shouldn't the deprecation messages reference the closest available temurin version?

At least for the LTS Versions:

• adoptopenjdk8 --> temurin8
• adoptopenjdk11 --> temurin11
• adoptopenjdk17 --> temurin17

For adoptopenjdk13-16 I'd probably recommend temurin17 as the closest LTS Version...

[karianna]

@gdams LMK if I can help wrap this up