Make DAI logo bigger

apps/block_scout_web/assets/css/theme/_dai_variables.scss

@@ -37,12 +37,16 @@ $tertiary:      #1755e4;
   }
 }
 
+.navbar-logo {
+  height: 1.75em;
+}
+
 .navbar.navbar-dark .navbar-toggler {
   color: $secondary;
   border-color: $secondary;
 
   .navbar-toggler-icon {
-    background-image: url("data:image/svg+xml;charset=utf8,%3Csvg viewBox='0 0 30 30' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath stroke='#{transparentize($secondary, 0.5)}' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E"); 
+    background-image: url("data:image/svg+xml;charset=utf8,%3Csvg viewBox='0 0 30 30' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath stroke='#{transparentize($secondary, 0.5)}' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
   }
 }