Update dependency mkdocstrings to ^0.18.0

Author: renovate-bot

pyproject.toml

@@ -37,7 +37,7 @@ importlib-metadata = {version = "^4.6", python = "<3.8"}
 # should be a dev requirement, but for readthedocs to build must by a dependency
 livereload = { version = "^2.6.3", optional = true }
 mkdocs = { version = "^1.1.2", optional = true }
-mkdocstrings = { version = "^0.16.0", optional = true }
+mkdocstrings = { version = "^0.18.0", optional = true }
 mkdocs-autorefs = { version = "^0.3.0", optional = true }
 mkdocs-include-markdown-plugin = { version = "^3.1.3", optional = true }
 mkdocs-material = { version = "^7.1.8", optional = true }