[DOCS] Missing `deepStrictAssert` deprecated notation in README

# Documentation

**Description**

`src/functions/DeepStrictAssert.ts` has a `@deprecated` JSDoc annotation, but the README.md Runtime Functions section does not show a deprecated notation. Users may unknowingly use the deprecated function in new code.

**Current State**

- Code (`src/functions/DeepStrictAssert.ts:13`): `@deprecated Use {@link deepStrictPick} instead.`
- README: `deepStrictAssert` is described as a regular function without any deprecation notice

**Fix**

In the README's Runtime Functions table or section:
1. Add deprecated notation to `deepStrictAssert`
2. Add migration guide recommending `deepStrictPick` usage

**Test Requirements**

Since this is a documentation change, code tests are not required, but verify that the build does not break:

```bash
npm run build:test && npm run test
```

Start in README.md's Runtime Functions section and compare the deepStrictAssert entry with the @deprecated annotation at src/functions/DeepStrictAssert.ts:13. Add deprecated notation and a migration recommendation for deepStrictPick, then run npm run build:test && npm run test to verify the documentation change does not break the build.

Written by the indexing model from the issue text.