Updating pyright

Update the version number in package.json.
Run ./generate-dependencies.sh. The script uses node2nix to resolve dependencies and save their hashes to node-packages.nix.
(optional) Check that the package builds by spawning nix-shell in top-level of the repo:
```
cd ../..
nix-shell
```
Or check that it builds with your local nixpkgs:
```
nix-build -E "(import <nixpkgs> {}).callPackage ./default.nix {}"
```
Commit .nix files generated in step 2 to git:
```
git add package.json *.nix
```