chore(ui): drop margin between annotations and labels

ui/src/Components/Grid/AlertGrid/AlertGroup/Alert/__snapshots__/index.test.js.snap

@@ -3,7 +3,7 @@
 exports[`<Alert /> matches snapshot with showAlertmanagers=false showReceiver=false 1`] = `
 "
 <li class=\\"components-grid-alertgrid-alertgroup-alert list-group-item pl-1 pr-0 py-0 my-1 rounded-0 border-left-1 border-right-0 border-top-0 border-bottom-0 border-danger\\">
-  <div class=\\"mb-1\\">
+  <div>
     <div class=\\"mr-1 mb-1 p-1 bg-light cursor-pointer d-inline-block rounded components-grid-annotation\\">
       <svg aria-hidden=\\"true\\"
            data-prefix=\\"fas\\"

ui/src/Components/Grid/AlertGrid/AlertGroup/Alert/index.js

@@ -47,7 +47,7 @@ const Alert = observer(
 
       return (
         <li className={classNames.join(" ")}>
-          <div className="mb-1">
+          <div>
             {alert.annotations.filter(a => a.isLink === false).map(a => (
               <RenderNonLinkAnnotation
                 key={a.name}