Update dependency content-tag to v4

Author: renovate[bot]

package.json

@@ -25,7 +25,7 @@
     "@babel/traverse": "^7.13.17",
     "@glimmer/syntax": "^0.80.0",
     "chalk": "^4.1.1",
-    "content-tag": "^1.1.2",
+    "content-tag": "^4.0.0",
     "emblem": "^0.12.1",
     "globby": "^11.0.3",
     "pkg-dir": "^5.0.0",