Use fill instead of style for svg colors

Using style does not work when a Content Security Policy is in place,
resulting in non-styles (black) images instead of grey.

src/Symfony/Bundle/WebProfilerBundle/Resources/views/Icon/forward.svg

@@ -1,4 +1,4 @@
 <svg version="1.1" xmlns="http://www.w3.org/2000/svg" x="0px" y="0px" width="24" height="24" viewBox="0 0 24 24" enable-background="new 0 0 24 24" xml:space="preserve">
-    <path style="fill:#aaa" d="M23.61,11.07L17.07,4.35A1.2,1.2,0,0,0,15,5.28V9H1.4A1.82,1.82,0,0,0,0,10.82v2.61A1.55,
+    <path fill="#aaa" d="M23.61,11.07L17.07,4.35A1.2,1.2,0,0,0,15,5.28V9H1.4A1.82,1.82,0,0,0,0,10.82v2.61A1.55,
         1.55,0,0,0,1.4,15H15v3.72a1.2,1.2,0,0,0,2.07.93l6.63-6.72A1.32,1.32,0,0,0,23.61,11.07Z"/>
 </svg>

src/Symfony/Bundle/WebProfilerBundle/Resources/views/Icon/redirect.svg

@@ -1,5 +1,5 @@
 <svg version="1.1" xmlns="http://www.w3.org/2000/svg" x="0px" y="0px" width="24" height="24" viewBox="0 0 24 24" enable-background="new 0 0 24 24" xml:space="preserve">
-    <path style="fill:#aaa" d="M23.06,7.83L14,0.38a1.25,1.25,0,0,0-2,.89V4.09a13.61,13.61,0,0,1-2.2.61l-1.3.47C8,
+    <path fill="#aaa" d="M23.06,7.83L14,0.38a1.25,1.25,0,0,0-2,.89V4.09a13.61,13.61,0,0,1-2.2.61l-1.3.47C8,
         5.35,7.59,5.6,7.12,5.81l-0.69.35-0.72.45a10.62,10.62,0,0,0-1.41,1A13.22,13.22,0,0,0,3,8.82a15.31,15.31,
         0,0,0-1.13,1.46A17.63,17.63,0,0,0,1,11.93c-0.18.58-.34,1.16-0.48,1.71S0.45,14.76.43,15.29a10.2,10.2,0,0,0,.16,
         1.5,5.72,5.72,0,0,0,.33,1.34c0.14,0.41.26,0.82,0.42,1.19,0.37,0.71.67,1.38,1,1.94l1,1.46c0.32,0.41.63,0.75,0.87,