Update dependencies on '6.1.0' in qt/qtshadertools

Change-Id: I2416ba8bedb2c8df0517e3e93c009a4f5cb2ff36
Reviewed-by: Qt Submodule Update Bot <qt_submodule_update_bot@qt-project.org>

dependencies.yaml

 dependencies:
   ../qtbase:
-    ref: 6d52d86b999088ec07e58c14197bddda043ef0aa
+    ref: b2ebc64dd9914359fe8acf2bc9960e341e98cf80
     required: true