Fix CC license CSP error (#14895)

bedrock/foundation/templates/foundation/licensing/website-content.html

@@ -19,7 +19,7 @@
   </p>
   <p>
     <a rel="license" href="https://creativecommons.org/licenses/by-sa/3.0/deed.locale">
-      <img alt="Creative Commons License"src="https://creativecommons.org/images/public/somerights20.gif" width="88" height="31">
+      <img alt="Creative Commons License" src="{{ static('img/foundation/licensing/cc-by-sa.svg') }}" width="88" height="31">
     </a>
   </p>
   <p>

bedrock/settings/__init__.py

@@ -178,7 +178,6 @@ else:
         "mozilla.org",
         "www.googletagmanager.com",
         "www.google-analytics.com",
-        "creativecommons.org",
         "images.ctfassets.net",
     ]
     _csp_script_src = [