move pyniryo to env dependencies

Author: DenisaCG

pyproject.toml

@@ -23,12 +23,14 @@ classifiers = [
     "Programming Language :: Python :: 3.12",
 ]
 dependencies = [
-    "jupyterlab-blockly>=0.3.2,<0.4",
-    "pyniryo"
+    "jupyterlab-blockly>=0.3.2,<0.4"
 ]
 dynamic = ["version", "description", "authors", "urls", "keywords"]
 
 [project.optional-dependencies]
+env = [
+    "pyniryo"
+]
 dev = [
     "click",
     "pre-commit",