reduce the width of the collapsed dashboard sidebar

renderer/src/builtins/dashboard/styles/parts/_sidebar.scss

@@ -53,7 +53,7 @@
     display: flex;
     align-items: center;
     justify-content: center;
-    color: var(--header-secondary);
+    color: var(--text-muted);
     cursor: pointer;
     transform: rotate3d(0, 0, 1, 90deg);
     &:hover {
@@ -61,7 +61,7 @@
     }
   }
   &[vz-collapsed] {
-    --vz-dashboard-sidebar-width: 70px;
+    --vz-dashboard-sidebar-width: 64px;
     #{$base}-collapser {
       transform: rotate3d(0, 0, 1, 270deg);
       margin-left: 8px;