chore(deps): update dependency gts to v7

Author: renovate-bot

package.json

@@ -97,7 +97,7 @@
     "extend": "^3.0.2",
     "fs-extra": "^11.3.0",
     "gapic-tools": "^1.0.2",
-    "gts": "^6.0.2",
+    "gts": "^7.0.0",
     "jsdoc": "^4.0.4",
     "jsdoc-fresh": "^4.0.0",
     "jsdoc-region-tag": "^3.0.0",