bump rpaframework to 28.6.0

Author: raivolink

conda.yaml

@@ -10,4 +10,4 @@ dependencies:
   - pip=23.2.1                        # https://pip.pypa.io/en/stable/news
   - robocorp-truststore=0.8.0         # https://pypi.org/project/robocorp-truststore/
   - pip:
-    - rpaframework==28.5.1            # https://rpaframework.org/releasenotes.html
+    - rpaframework==28.6.0            # https://rpaframework.org/releasenotes.html