refactor: Update ScopedInjectable to use SlotKey for caching logic

[remimd]

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[Copilot]

Pull request overview

This PR refactors the ScopedInjectable class to use SlotKey instances as cache keys instead of using the injectable instance itself (self). This architectural improvement better separates concerns by decoupling the cache key from the injectable instance.

Key Changes

• Added a key: SlotKey[T] field to ScopedInjectable for use as the cache key
• Updated all cache-related method calls to use self.key instead of self
• Updated type signatures in scope.py to properly reflect that SlotKey[Any] is the cache key type
• Updated dependency versions: secretstorage (3.4.1 → 3.5.0) and type-analyzer (0.1.0 → 0.1.1)

Reviewed changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated no comments.

File	Description
uv.lock	Updates secretstorage from 3.4.1 to 3.5.0 and type-analyzer from 0.1.0 to 0.1.1
injection/_core/scope.py	Updates type signatures for in_scope_cache, remove_scoped_values, and cache fields to use SlotKey[Any] as the key type
injection/_core/injectables.py	Adds key: SlotKey[T] field to ScopedInjectable and updates all cache operations to use self.key instead of self

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