chore(deps): bump the workerd-and-workers-types group across 1 directory with 2 updates (#10410)

Bumps the workerd-and-workers-types group with 2 updates in the / directory: [@cloudflare/workers-types](https://github.com/cloudflare/workerd) and [workerd](https://github.com/cloudflare/workerd).


Updates `@cloudflare/workers-types` from 4.20240614.0 to 4.20250819.0
- [Release notes](https://github.com/cloudflare/workerd/releases)
- [Changelog](https://github.com/cloudflare/workerd/blob/main/Dockerfile.release)
- [Commits](https://github.com/cloudflare/workerd/commits)

Updates `workerd` from 1.20250816.0 to 1.20250819.0
- [Release notes](https://github.com/cloudflare/workerd/releases)
- [Changelog](https://github.com/cloudflare/workerd/blob/main/Dockerfile.release)
- [Commits](cloudflare/workerd@v1.20250816.0...v1.20250819.0)

---
updated-dependencies:
- dependency-name: "@cloudflare/workers-types"
  dependency-version: 4.20250819.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: workerd-and-workers-types
- dependency-name: workerd
  dependency-version: 1.20250819.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: workerd-and-workers-types
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

fixtures/dynamic-worker-loading/package.json

@@ -8,7 +8,7 @@
 	},
 	"devDependencies": {
 		"@cloudflare/workers-tsconfig": "workspace:^",
-		"@cloudflare/workers-types": "^4.20250813.0",
+		"@cloudflare/workers-types": "^4.20250823.0",
 		"undici": "catalog:default",
 		"vitest": "catalog:default",
 		"wrangler": "workspace:*"