Pull request: client: clarify browser sup

Merge in DNS/adguard-home from browser-compat to master

Squashed commit of the following:

commit a0e0c7fe879dd610bc5dccdb765a879521a4729f
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Wed Jun 16 12:59:23 2021 +0300

    client: clarify browser sup

client/package.json

@@ -93,8 +93,10 @@
         ],
         "production": [
             ">1%",
-            "last 4 versions",
+            "last 4 chrome version",
-            "Firefox ESR",
+            "last 4 firefox version",
+            "last 4 safari version",
+            "firefox esr",
             "not ie < 9"
         ]
     }