[5.2] Composer update enshrined/svg-sanitize to fix SVG uploads (#44746)

Author: richard67

composer.json

@@ -101,7 +101,7 @@
     "ext-dom": "*",
     "composer/ca-bundle": "^1.5.1",
     "dragonmantank/cron-expression": "^3.3.3",
-    "enshrined/svg-sanitize": "^0.20.0",
+    "enshrined/svg-sanitize": "^0.21.0",
     "lcobucci/jwt": "^4.3.0",
     "web-token/jwt-library": "^3.4.6",
     "phpseclib/bcmath_compat": "^2.0.3",