Fix icon color in light/dark modes (#2107)

- Icon had hard coded color for dark mode and looked all wrong (grey) in
  light mode.

Author: frankwiles

djangoproject/templates/svg_logos/package.html

@@ -1,2 +1,2 @@
 {# Material Symbols - Copyright 2022 Google LLC - Used under terms of Apache 2.0 license #}
-<svg xmlns="http://www.w3.org/2000/svg" height="150px" viewBox="0 -960 960 960" width="150px" fill="#e3e3e3"><path d="M440-183v-274L200-596v274l240 139Zm80 0 240-139v-274L520-457v274Zm-80 92L160-252q-19-11-29.5-29T120-321v-318q0-22 10.5-40t29.5-29l280-161q19-11 40-11t40 11l280 161q19 11 29.5 29t10.5 40v318q0 22-10.5 40T800-252L520-91q-19 11-40 11t-40-11Zm200-528 77-44-237-137-78 45 238 136Zm-160 93 78-45-237-137-78 45 237 137Z"/></svg>
+<svg xmlns="http://www.w3.org/2000/svg" height="150px" viewBox="0 -960 960 960" width="150px"><path d="M440-183v-274L200-596v274l240 139Zm80 0 240-139v-274L520-457v274Zm-80 92L160-252q-19-11-29.5-29T120-321v-318q0-22 10.5-40t29.5-29l280-161q19-11 40-11t40 11l280 161q19 11 29.5 29t10.5 40v318q0 22-10.5 40T800-252L520-91q-19 11-40 11t-40-11Zm200-528 77-44-237-137-78 45 238 136Zm-160 93 78-45-237-137-78 45 237 137Z" fill="currentColor" /></svg>