refactor: replace got with native fetch API

[MarshallOfSound]

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• The changes are appropriately documented (if applicable).
• The changes have sufficient test coverage (if applicable).
• The testsuite passes successfully on my local machine (if applicable).

Summarize your changes:

This PR removes the got HTTP client library dependency and replaces it with the native fetch API, which is now available in Node.js. This reduces external dependencies and simplifies the codebase.

Changes:

• Removed got dependency from @electron-forge/maker-zip and @electron-forge/core packages
• Updated MakerZIP.ts to use native fetch() instead of got.get() for HTTP requests to the macOS update manifest URL
• Updated response handling to use the Fetch API's Response object properties (status, json()) instead of got's response format (statusCode, body)
• Updated test mocks in MakerZip.spec.ts to stub the global fetch function using vi.stubGlobal() instead of mocking the got module
• Updated test assertions to verify mockFetch calls instead of got.get calls

The functionality remains identical - the code still fetches the RELEASES.json manifest from the configured URL and handles both successful (200) and not-found (404) responses appropriately.

https://claude.ai/code/session_01BYVpGL3mf7JBUZSnABvRR3