Update boot menu background

src/backgrounds/grub-16x9.svg

@@ -24,9 +24,9 @@
      inkscape:pageopacity="0"
      inkscape:pagecheckerboard="1"
      showgrid="false"
-     inkscape:zoom="1.0174481"
-     inkscape:cx="675.71014"
-     inkscape:cy="538.11099"
+     inkscape:zoom="0.71944445"
+     inkscape:cx="747.10424"
+     inkscape:cy="537.22007"
      inkscape:window-width="3840"
      inkscape:window-height="2091"
      inkscape:window-x="1080"
@@ -369,5 +369,13 @@
      height="151.78999"
      rx="2.6458001"
      ry="2.6458001"
+     style="opacity:0.482292;mix-blend-mode:multiply;fill:#007ebd;fill-opacity:1;paint-order:normal"
+     id="rect1" /><rect
+     x="119.84"
+     y="66.980003"
+     width="268.32001"
+     height="151.78999"
+     rx="2.6458001"
+     ry="2.6458001"
      style="opacity:0.65;mix-blend-mode:screen;fill:url(#linearGradient7684);fill-opacity:1;paint-order:normal;filter:url(#filter7676-95)"
      id="rect7484" /></svg>

src/backgrounds/grub-4x3.svg

@@ -24,9 +24,9 @@
      inkscape:pageopacity="0"
      inkscape:pagecheckerboard="1"
      showgrid="false"
-     inkscape:zoom="1.0174481"
-     inkscape:cx="673.74444"
-     inkscape:cy="315.98663"
+     inkscape:zoom="1.4388889"
+     inkscape:cx="671.69884"
+     inkscape:cy="554.94208"
      inkscape:window-width="3840"
      inkscape:window-height="2091"
      inkscape:window-x="1080"
@@ -732,6 +732,16 @@
      style="filter:url(#e)"
      xlink:href="#b"
      id="use36" />
+  <rect
+     x="23.376984"
+     y="69.625992"
+     width="268.32001"
+     height="151.78999"
+     rx="3.5077329"
+     ry="2.6458335"
+     transform="matrix(0.75428588,0,0,0.99999998,71.67407,-2.6459917)"
+     style="mix-blend-mode:multiply;fill:#007ebd;fill-opacity:1;opacity:0.5"
+     id="rect1" />
   <rect
      x="23.376984"
      y="69.625992"