Bump dayjs from 1.11.20 to 1.11.21 in /bundles/org.openhab.ui/web (#4338)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

bundles/org.openhab.ui/web/package-lock.json

@@ -95,7 +95,7 @@
     "codemirror": "^6.0.2",
     "cronstrue": "^3.14.0",
     "crypto-browserify": "^3.12.0",
-    "dayjs": "^1.11.20",
+    "dayjs": "^1.11.21",
     "debounce": "^3.0.0",
     "diacritic": "^0.0.2",
     "dom7": "^4.0.6",