Fix mypy CI.

mesonbuild/interpreter/interpreterobjects.py

diff --git a/mesonbuild/interpreter/interpreterobjects.py b/mesonbuild/interpreter/interpreterobjects.py
index ef899e2..d3a4b12 100644
--- a/mesonbuild/interpreter/interpreterobjects.py
+++ b/mesonbuild/interpreter/interpreterobjects.py
@@ -554,7 +554,7 @@
             raise InterpreterException('Unable to get the version of a not-found external program')
         try:
             return self.held_object.get_version(self.interpreter)
-        except MesonException:
+        except mesonlib.MesonException:
             return 'unknown'
 
     def found(self) -> bool: