Bump semver to ~7.7.4; fix INpmCheckVersionBumpType for new 'release' ReleaseType

[iclanton]

Summary

• Bumps semver to ~7.7.4 and @types/semver to 7.7.1 across the repo.
• @types/semver 7.7.1 added "release" to ReleaseType. This caused a build failure in libraries/npm-check-fork because INpmCheckVersionBumpType didn't include "release". Added it to fix the build.
• Refactored the dense ternary logic in CreatePackageSummary.ts into readable if blocks while preserving equivalent behavior.

Test plan

• libraries/npm-check-fork builds cleanly with heft build --clean
• Existing behavior is preserved — no logic changes, only the type union was extended with a value that semver.diff() can now return

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