Fix NPM versions for @hotwired/stimulus and @rails/actioncable

The previous version ranges were failing on Yarn 2+ with:

YN0001: │ Error: @rails/actioncable@>= 6.0, < 8 isn't supported by any available resolver

YN0001: │ Error: @hotwired/stimulus@>= 3.0, < 4 isn't supported by any available resolver

package.json

@@ -55,8 +55,8 @@
     "@hotwired/stimulus": ">= 3.0"
   },
   "dependencies": {
-    "@hotwired/stimulus": ">= 3.0, < 4",
-    "@rails/actioncable": ">= 6.0, < 8",
+    "@hotwired/stimulus": "^3",
+    "@rails/actioncable": "^6 || ^7",
     "cable_ready": "5.0.0-pre10"
   },
   "devDependencies": {

yarn.lock

@@ -342,7 +342,7 @@
   resolved "https://registry.yarnpkg.com/@glimmer/util/-/util-0.41.4.tgz#508fd82ca40305416e130f0da7b537295ded7989"
   integrity sha512-DwS94K+M0vtG+cymxH0rslJr09qpdjyOLdCjmpKcG/nNiZQfMA1ybAaFEmwk9UaVlUG9STENFeQwyrLevJB+7g==
 
-"@hotwired/stimulus@>= 3.0, < 4":
+"@hotwired/stimulus@^3":
   version "3.2.1"
   resolved "https://registry.yarnpkg.com/@hotwired/stimulus/-/stimulus-3.2.1.tgz#e3de23623b0c52c247aba4cd5d530d257008676b"
   integrity sha512-HGlzDcf9vv/EQrMJ5ZG6VWNs8Z/xMN+1o2OhV1gKiSG6CqZt5MCBB1gRg5ILiN3U0jEAxuDTNPRfBcnZBDmupQ==
@@ -487,7 +487,7 @@
     "@types/sinon-chai" "^3.2.3"
     chai-a11y-axe "^1.3.2"
 
-"@rails/actioncable@>= 6.0, < 8":
+"@rails/actioncable@^6 || ^7":
   version "7.0.4"
   resolved "https://registry.yarnpkg.com/@rails/actioncable/-/actioncable-7.0.4.tgz#70a3ca56809f7aaabb80af2f9c01ae51e1a8ed41"
   integrity sha512-tz4oM+Zn9CYsvtyicsa/AwzKZKL+ITHWkhiu7x+xF77clh2b4Rm+s6xnOgY/sGDWoFWZmtKsE95hxBPkgQQNnQ==