remove liquid-tag.js and move change-case to devDependencies (#23050)

* remove liquid-tag.js and move change-case to devDependencies

Part of #1265

* fixed

Author: Peter Bengtsson

lib/liquid-tags/liquid-tag.js

@@ -22,7 +22,6 @@
     "ajv-formats": "^2.1.1",
     "bottleneck": "^2.19.5",
     "browser-date-formatter": "^3.0.3",
-    "change-case": "^4.1.2",
     "cheerio": "^1.0.0-rc.10",
     "classnames": "^2.3.1",
     "compression": "^1.7.4",
@@ -127,6 +126,7 @@
     "babel-plugin-styled-components": "^1.13.3",
     "babel-preset-env": "^1.7.0",
     "chalk": "^4.1.2",
+    "change-case": "^4.1.2",
     "commander": "^8.3.0",
     "count-array-values": "^1.2.1",
     "cross-env": "^7.0.3",