Migrate to Alpine, use Alpine's ImageMagick packages, add ImageMagick security policy, update Ruby version and a few gems

hyrax/package.json

@@ -5,16 +5,15 @@
   "dependencies": {
     "postcss": "^8.4.14",
     "postcss-scss": "^4.0.4",
-    "universalviewer": "^3.0.16"
+    "universalviewer": "^3.1.4"
   },
   "scripts": {
     "preinstall": "rm -rf ./public/uv",
     "postinstall": "yarn run uv-install && yarn run uv-config",
-    "uv-install": "shx cp -r ./node_modules/universalviewer/dist ./public/uv",
-    "uv-config": "shx cp ./config/uv/uv.html ./public/uv/uv.html & shx cp ./config/uv/uv-config.json ./public/uv/"
+    "uv-install": "cp -r ./node_modules/universalviewer/dist ./public/uv",
+    "uv-config": "cp ./config/uv/uv.html ./public/uv/uv.html && cp ./config/uv/uv-config.json ./public/uv/"
   },
   "devDependencies": {
-    "shx": "^0.3.2",
     "stylelint-config-standard-scss": "^4.0.0"
   }
 }