Update dependency preact to v10

Author: renovate[bot]

libraries/preact/package-lock.json

@@ -20,6 +20,6 @@
   },
   "dependencies": {
     "@webcomponents/webcomponentsjs": "1.3.3",
-    "preact": "8.5.2"
+    "preact": "10.0.4"
   }
 }

libraries/preact/package.json

@@ -20,7 +20,7 @@
   "dependencies": {
     "@skatejs/renderer-preact": "0.3.3",
     "@webcomponents/webcomponentsjs": "1.3.3",
-    "preact": "8.5.2",
+    "preact": "10.0.4",
     "skatejs": "5.2.4"
   }
 }