deps: move mermaid to devDeps –

this is now handled by webpack since 28c51cb38a

package.json

@@ -72,7 +72,6 @@
     "@braintree/sanitize-url": "7.1.1",
     "@electron/remote": "2.1.2",
     "@highlightjs/cdn-assets": "11.11.1",
-    "@mermaid-js/layout-elk": "0.1.7",
     "@triliumnext/express-partial-content": "1.0.1",
     "archiver": "7.0.1",
     "async-mutex": "0.5.0",
@@ -127,7 +126,6 @@
     "leaflet": "1.9.4",
     "leaflet-gpx": "2.1.2",
     "marked": "15.0.7",
-    "mermaid": "11.6.0",
     "mime-types": "3.0.1",
     "multer": "1.4.5-lts.2",
     "normalize-strings": "1.1.1",
@@ -171,6 +169,7 @@
     "@fullcalendar/list": "6.1.15",
     "@fullcalendar/multimonth": "6.1.15",
     "@fullcalendar/timegrid": "6.1.15",
+    "@mermaid-js/layout-elk": "0.1.7",
     "@mind-elixir/node-menu": "1.0.5",
     "@playwright/test": "1.51.1",
     "@popperjs/core": "2.11.8",
@@ -231,6 +230,7 @@
     "knockout": "3.5.1",
     "lorem-ipsum": "2.0.8",
     "mark.js": "8.11.1",
+    "mermaid": "11.6.0",
     "mind-elixir": "4.5.0",
     "mini-css-extract-plugin": "2.9.2",
     "nodemon": "3.1.9",