Make compatible with pnpm

[AJamesPhillips]

When using the pnpm package manager and running this launch.json config it was failing with:

ts-jest-sample %  cd /Users/my_user/ts-jest-sample ; /usr/bin/env 'NOD
E_OPTIONS= --require "/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/ms-vscode.js-debug/src/bootloader.
js"  --inspect-publish-uid=http' 'VSCODE_INSPECTOR_OPTIONS=:::{"inspectorIpc":"/var/folders/v6/j9r9l99d7nv36b1jppx8j1mh0000gn/T
/node-cdp.75090-b7cacc76-7.sock","deferredMode":false,"waitForDebugger":"","execPath":"/Users/my_user/.nvm/versions/node/v20.12.2/b
in/node","onlyEntrypoint":false,"autoAttachMode":"always","fileCallback":"/var/folders/v6/j9r9l99d7nv36b1jppx8j1mh0000gn/T/node
-debug-callback-b52a049f5ebf242c"}' /Users/my_user/.nvm/versions/node/v20.12.2/bin/node /Users/my_user/ts-jest-sampl
e/node_modules/.bin/jest --runInBand 
Debugger attached.
Waiting for the debugger to disconnect...
/Users/my_user/ts-jest-sample/node_modules/.bin/jest:2
basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
          ^^^^^^^

SyntaxError: missing ) after argument list
    at internalCompileFunction (node:internal/vm:128:18)
    at wrapSafe (node:internal/modules/cjs/loader:1280:20)
    at Module._compile (node:internal/modules/cjs/loader:1332:27)
    at Module._extensions..js (node:internal/modules/cjs/loader:1427:10)
    at Module.load (node:internal/modules/cjs/loader:1206:32)
    at Module._load (node:internal/modules/cjs/loader:1022:12)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:135:12)
    at node:internal/main/run_main_module:28:49

Node.js v20.12.2

When I changed the launch.json to that in this PR (and upgraded the dependencies in #13) then this error went away.