Lock @vercel/webpack-asset-relocator-loader at 1.7.3

[ryanhugh]

If you download this repo and run npm i -f you will get the following issue. This happens because @vercel/webpack-asset-relocator-loader version 1.7.4 is installed because package.json specifies ^1.7.3. However, 1.7.4 crashes with this error. Locking it at 1.7.3 fixes the issues.

More details here: electron/forge#3600

> npm run package
yarn run v1.22.19
$ electron-forge package
✔ Checking your system
✔ Preparing to package application
❯ Running packaging hooks
  ✔ Running generateAssets hook
  ❯ Running prePackage hook
    ✔ [plugin-webpack] Preparing native dependencies
    ✖ [plugin-webpack] Building webpack bundles
      › Compilation errors in the renderer: assets by status 1.36 MiB [cached] 4 assets
        runtime modules 2.58 KiB 10 modules
        javascript modules 26.5 KiB
        cacheable modules 26.1 KiB
        modules by path ./node_modules/ 22.7 KiB 10 modules
        modules by path ./src/renderer/ 3.34 KiB
        modules by path ./src/renderer/*.css 2.37 KiB 2 modules
        + 2 modules
        + 10 modules
        ./src/renderer/flower.jpg 1.34 MiB (asset) 42 bytes (javascript) [built] [code generated]
        ERROR in webpack/runtime/compat
        The installed version of @vercel/webpack-asset-relocator-loader does not appear to be compatible with Forge