Bump blessed from 1.20.0 to 1.21.0

Bumps [blessed](https://github.com/jquast/blessed) from 1.20.0 to 1.21.0.
- [Release notes](https://github.com/jquast/blessed/releases)
- [Changelog](https://github.com/jquast/blessed/blob/master/docs/history.rst)
- [Commits](jquast/blessed@1.20.0...1.21.0)

---
updated-dependencies:
- dependency-name: blessed
  dependency-version: 1.21.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements.txt

@@ -3,7 +3,7 @@ ansible==11.3.0
 ansible-core==2.18.2
 attrs==25.3.0
 black==25.1.0
-blessed==1.20.0
+blessed==1.21.0
 boto3==1.37.38
 botocore==1.38.8
 certifi==2025.1.31