feat: compare new versions with semver

[johnste]

• Use the semver packages to properly compare versions

[Copilot]

Pull Request Overview

This PR implements proper semantic version comparisons using the semver package and updates the version check logic accordingly.

• Introduces tests for various version comparison scenarios, including invalid and pre-release versions.
• Updates the update check logic in version.go to use semver for more reliable version comparisons.
• Adds the semver package dependency in go.mod.

Reviewed Changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated no comments.

File	Description
apps/finicky/src/version/version_test.go	Added test cases to validate update availability using semantic versioning.
apps/finicky/src/version/version.go	Replaced string equality checks with semver-based comparisons and enhanced logging for update checks.
apps/finicky/src/go.mod	Added dependency on the semver package.

Comments suppressed due to low confidence (1)

apps/finicky/src/version/version_test.go:20

• Consider adding additional test cases covering semver build metadata (e.g., '1.0.0+build') to ensure that such versions are correctly compared.

		{"invalid latest version", "1.0.0", "invalid", false, true},