fix: move dayjs into prod dependencies, closes #421

Author: bahmutov

package-lock.json

@@ -48,6 +48,7 @@
   "private": false,
   "dependencies": {
     "@cypress/browserify-preprocessor": "3.0.1",
+    "dayjs": "1.10.4",
     "debug": "4.3.1",
     "execa": "4.1.0",
     "globby": "11.0.3",
@@ -66,7 +67,6 @@
     "check-code-coverage": "1.10.0",
     "console-log-div": "0.6.3",
     "cypress": "6.8.0",
-    "dayjs": "1.10.4",
     "express": "4.17.1",
     "lodash": "4.17.21",
     "markdown-link-check": "3.8.6",