update dependency version

Author: j-c-c

pyproject.toml

@@ -34,7 +34,7 @@ dependencies = [
     # finufft 2.2.0 doesn't seemt to run on GHA Windows CI...    
     "finufft==2.2.0 ; sys_platform != 'win32'",
     "finufft==2.1.0 ; sys_platform == 'win32'",
-    "gemmi >= 0.4.8",
+    "gemmi >= 0.6.5",
     "grpcio >= 1.54.2",
     "joblib",
     "matplotlib >= 3.2.0",