build(bec_lib): version bump to 3.69.3

pyproject.toml

@@ -14,7 +14,7 @@ classifiers = [
 ]
 dependencies = [
     "bec_ipython_client~=3.52", # needed for jupyter console
-    "bec_lib~=3.68",
+    "bec_lib~=3.69.3",
     "bec_qthemes~=0.7, >=0.7",
     "black~=25.0",              # needed for bw-generate-cli
     "isort~=5.13, >=5.13.2",    # needed for bw-generate-cli