Revert PySide version requirement

The updated PySide constraint is only for testing purpose in the
previous commit. The constraint will be updated in other MRs when
needed.

conda.recipe/meta.yaml

@@ -20,7 +20,7 @@ requirements:
     - python >=3.9
     - numpy >=1.23.0,<2.0
     - obspy >=1.3.0
-    - PySide6>=6.7
+    - PySide6>=6.5.2
     - matplotlib>=3.6.2
 
 test:

setup.py

@@ -34,7 +34,7 @@ setup(
     install_requires=[
         'numpy >=1.23.0,<2.0',
         'obspy>=1.3.0',
-        'PySide6>=6.7',
+        'PySide6>=6.5.2',
         'matplotlib>=3.6.2',
     ],
     setup_requires=[],