Change Gradle Dependabot interval to weekly

[methum-m]

This PR adds a 7-day dependency cooldown to the Gradle package ecosystem in Dependabot.

• Prevents Dependabot from opening PRs for library updates until the version is at least 7 days old.
• GitHub Actions updates remain weekly; cooldown is only applied to Gradle dependencies.

Original issue: #2853

[TheLastProject]

Sorry, I wasn't really clear enough. I meant a dependency cooldown in the sense of: not downloading a dependency update unless the dependency version itself is at least a week old: https://blog.yossarian.net/2025/11/21/We-should-all-be-using-dependency-cooldowns

[methum-m]

Hey, thanks for clarifying! I’ve updated the PR to add the 7-day cooldown under Gradle. GitHub Actions stays weekly. Should now cover the supply-chain concern. If there’s anything else I should adjust, please let me know!

[TheLastProject]

Could we add the cooldown to GitHub Actions too? Malicous updates are possible there too.

Otherwise this looks good, thanks :)

[methum-m]

Thanks for your patience! I’ve updated the PR to add the 7-day cooldown to GitHub Actions as well !

[TheLastProject]

Thanks!