CI: Pin inventory to 0.3.4 in MSRV job

Author: messense

noxfile.py

@@ -424,6 +424,7 @@ def set_minimal_package_versions(session: nox.Session, venv_backend="none"):
     min_pkg_versions = {
         "csv": "1.1.6",
         "indexmap": "1.6.2",
+        "inventory": "0.3.4",
         "hashbrown": "0.9.1",
         "plotters": "0.3.1",
         "plotters-svg": "0.3.1",