fixed select2 multiple height bug (#2325)

build/scss/plugins/_select2.scss

@@ -115,7 +115,7 @@
   & {
     .select2-selection--multiple {
       border: $input-border-width solid $input-border-color;
-      height: $input-height;
+      min-height: $input-height;
 
       &:focus {
         border-color: $input-focus-border-color;
@@ -123,6 +123,7 @@
 
       .select2-selection__rendered {
         padding: 0 $input-padding-y;
+        margin-bottom: -$input-padding-x/2;
 
         li:first-child.select2-search.select2-search--inline {
           width: 100%;

dist/css/adminlte.css

@@ -22945,7 +22945,7 @@ html.maximized-card {
 
 .select2-container--default .select2-selection--multiple {
   border: 1px solid #ced4da;
-  height: calc(2.25rem + 2px);
+  min-height: calc(2.25rem + 2px);
 }
 
 .select2-container--default .select2-selection--multiple:focus {
@@ -22954,6 +22954,7 @@ html.maximized-card {
 
 .select2-container--default .select2-selection--multiple .select2-selection__rendered {
   padding: 0 0.375rem;
+  margin-bottom: -0.375rem;
 }
 
 .select2-container--default .select2-selection--multiple .select2-selection__rendered li:first-child.select2-search.select2-search--inline {