Bump blockbuster from 1.5.25 to 1.5.26 (#6403)

Bumps [blockbuster](https://github.com/cbornet/blockbuster) from 1.5.25 to 1.5.26.
- [Release notes](https://github.com/cbornet/blockbuster/releases)
- [Commits](https://github.com/cbornet/blockbuster/compare/v1.5.25...v1.5.26)

---
updated-dependencies:
- dependency-name: blockbuster
  dependency-version: 1.5.26
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

requirements.txt

@@ -5,7 +5,7 @@ atomicwrites-homeassistant==1.4.1
 attrs==25.4.0
 awesomeversion==25.8.0
 backports.zstd==1.1.0
-blockbuster==1.5.25
+blockbuster==1.5.26
 brotli==1.2.0
 ciso8601==2.3.3
 colorlog==6.10.1