'fix' inversion of ~= operators

pretty sure that ~= are always ">=" and "<" so this is only a cosmetic
improvement

src/poetry/core/version/markers.py

@@ -342,7 +342,7 @@ def invert(self) -> BaseMarker:
                 )
 
             min_ = self._constraint.min
-            min_operator = ">=" if self._constraint.include_min else "<"
+            min_operator = ">=" if self._constraint.include_min else ">"
             max_ = self._constraint.max
             max_operator = "<=" if self._constraint.include_max else "<"