build: Use GITHUB_TOKEN for jreleaser

[abhinayagarwal]

Update workflows to use GITHUB_TOKEN instead of PAT. kcctl/kcctl uses the same for JRELEASER_GITHUB_TOKEN.

Issue

Fixes #623

Progress

• Change must not contain extraneous whitespace
• License header year is updated, if required
• The PR name must follow the pre-defined format
• Verify the contributor has signed Gluon Individual Contributor License Agreement (CLA)

[aalmiray]

A PAT will be needed if package managers such as brew and chocolatey become active. Currently they are configured but deactivated.

[abhinayagarwal]

@aalmiray Thanks for the heads up!

@erwin1 Should we proceed with GITHUB_TOKEN for now and revisit the PAT requirement when we decide to activate brew and chocolatey?

[erwin1]

@erwin1 Should we proceed with GITHUB_TOKEN for now and revisit the PAT requirement when we decide to activate brew and chocolatey?

yes, please proceed with the github token until we really need a pat