Bump @anthropic-ai/dxt from 0.2.1 to 0.2.3

Bumps @anthropic-ai/dxt from 0.2.1 to 0.2.3.

---
updated-dependencies:
- dependency-name: "@anthropic-ai/dxt"
  dependency-version: 0.2.3
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]