chore(build): add 8.2.0 ppa server version

[gagik]

This seems to be all that is needed considering since i.e. https://repo.mongodb.org/yum/redhat/8/mongodb-org/8.2/ exists.

[Copilot]

Pull Request Overview

This PR adds support for MongoDB server version 8.2.0 to the build configuration system by extending the existing PPA (Personal Package Archive) server version support infrastructure.

• Adds 8.2.0 as a new supported server version in the type definitions
• Configures PPA repositories and signing tokens for version 8.2.0
• Updates test expectations to include 8.2.0 repository URLs

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
packages/build/src/config/server-with-ppa.ts	Adds 8.2.0 to supported versions and maps it to compatible PPA repositories
packages/build/src/barque.ts	Configures signing authentication for 8.2.0 with notary key and token
packages/build/src/barque.spec.ts	Updates test expectations to include 8.2.0 repository URLs across all supported platforms

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