chore(deps-dev): bump webpack-dev-server from 4.7.3 to 5.2.1 (#5114)

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Joe Boccanfuso <joe.boccanfuso@radicalimaging.com>
Co-authored-by: Joe Boccanfuso <109477394+jbocce@users.noreply.github.com>

platform/app/.webpack/webpack.pwa.js

@@ -160,15 +160,17 @@ module.exports = (env, argv) => {
       client: {
         overlay: { errors: true, warnings: false },
       },
-      proxy: {
-        '/dicomweb': 'http://localhost:5000',
-        '/dicom-microscopy-viewer': {
-          target: 'http://localhost:3000',
-          pathRewrite: {
-            '^/dicom-microscopy-viewer': `/${PUBLIC_URL}/dicom-microscopy-viewer`,
+      proxy: [
+        {
+          '/dicomweb': 'http://localhost:5000',
+          '/dicom-microscopy-viewer': {
+            target: 'http://localhost:3000',
+            pathRewrite: {
+              '^/dicom-microscopy-viewer': `/${PUBLIC_URL}/dicom-microscopy-viewer`,
+            },
           },
         },
-      },
+      ],
       static: [
         {
           directory: '../../testdata',