Bump chai from 5.1.1 to 5.1.2 (#458)

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Author: dependabot[bot]

package-lock.json

@@ -22,7 +22,7 @@
     "posttest": "mocha"
   },
   "devDependencies": {
-    "chai": "^5.1.1",
+    "chai": "^5.1.2",
     "eslint": "^8.57.0",
     "eslint-config-google": "^0.14.0",
     "eslint-config-standard": "^17.0.0",