chore: pinner

setup.py

@@ -17,7 +17,7 @@
         "flake8-breakpoint>=1.1.0,<2",  # Detect breakpoints left in code
         "flake8-print>=5.0.0,<6",  # Detect print statements left in code
         "isort>=5.13.2,<6",  # Import sorting linter
-        "mdformat>=0.7.18",  # Auto-formatter for markdown
+        "mdformat==0.7.18",  # Auto-formatter for markdown
         "mdformat-gfm>=0.3.5",  # Needed for formatting GitHub-flavored markdown
         "mdformat-frontmatter>=0.4.1",  # Needed for frontmatters-style headers in issue templates
         "mdformat-pyproject>=0.0.1",  # Allows configuring in pyproject.toml