build(deps): bump chiavdf from 1.1.4 to 1.1.6

Bumps [chiavdf](https://github.com/Chia-Network/chiavdf) from 1.1.4 to 1.1.6.
- [Release notes](https://github.com/Chia-Network/chiavdf/releases)
- [Commits](Chia-Network/chiavdf@1.1.4...1.1.6)

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

Signed-off-by: dependabot[bot] <support@github.com>

pyproject.toml

@@ -47,7 +47,7 @@ boto3 = "1.34.143"  # AWS S3 for Data Layer S3 plugin
 chiabip158 = "1.5.1"  # bip158-style wallet filters
 chiapos = "2.0.4"  # proof of space
 chia_rs = "0.13.0"
-chiavdf = "1.1.4"  # timelord and vdf verification
+chiavdf = "1.1.6"  # timelord and vdf verification
 click = "8.1.7"  # For the CLI
 clvm = "0.9.10"
 clvm_tools = "0.4.9"  # Currying Program.to other conveniences