Upgrade pulumi-java to 0.15.0

[dustin-ruetz]

This PR was generated via $ upgrade-provider 1Password/pulumi-onepassword --kind=all --target-bridge-version=latest.

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• Updating Java Gen version from 0.12.0 to 0.15.0.

[github-actions]

⚠️ This PR contains unsigned commits. To get your PR merged, please sign those commits (git rebase --exec 'git commit -S --amend --no-edit -n' @{upstream}) and force push them to this branch (git push --force-with-lease).

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