bump: update version to 1.20.1 in package.json and package-lock.json#1263

eleanorjboyd merged 1 commit intomicrosoft:release/1.20microsoft/vscode-python-environments:release/1.20from

eleanorjboyd:miserable-tapireleanorjboyd/vscode-python-environments:miserable-tapirCopy head branch name to clipboard