feat: remove yarn dependency (#2297)

docs/howto-build.md

@@ -15,7 +15,6 @@
 ## <a id="dependencies"></a>Dependencies
 
 - node 20.14
-- yarn
 - jq
 - git
 - python3 3.11
@@ -97,7 +96,7 @@ review-tools.snap-review --allow-classic codium*.snap
 - run `./dev/update_patches.sh`
 - when the script pauses at `Press any key when the conflict have been resolved...`, open `vscode` directory in **VSCodium**
 - fix all the `*.rej` files
-- run `yarn watch`
+- run `npm run watch`
 - run `./script/code.sh` until everything is ok
 - press any key to continue the script `update_patches.sh`
 
@@ -108,7 +107,7 @@ review-tools.snap-review --allow-classic codium*.snap
 - revert all changes
 - run `git apply --reject ../patches/<name>.patch`
 - fix all the `*.rej` files
-- run `yarn watch`
+- run `npm run watch`
 - run `./script/code.sh` until everything is ok
 - run `git diff > ../patches/<name>.patch`