Add python-lsp-server and python-lsp-ruff to dev dependencies (#1169)

Author: leshy

pyproject.toml

@@ -232,6 +232,10 @@ dev = [
     # docs
     "md-babel-py==1.1.1",
 
+    # LSP
+    "python-lsp-server[all]==1.14.0",
+    "python-lsp-ruff==2.3.0",
+
     # Types
     "lxml-stubs>=0.5.1,<1",
     "pandas-stubs>=2.3.2.250926,<3",