varnish77: 7.7.0 -> 7.7.1

https://www.openwall.com/lists/oss-security/2025/05/13/5

Author: leona-ya

pkgs/servers/varnish/default.nix

@@ -101,7 +101,7 @@ in
   };
   # EOL 2026-03-15
   varnish77 = common {
-    version = "7.7.0";
-    hash = "sha256-aZSPIVEfgc548JqXFdmodQ6BEWGb1gVaPIYTFaIQtOQ=";
+    version = "7.7.1";
+    hash = "sha256-TAbFyZaApCm3KTT5/VE5Y/fhuoVTszyn7BLIWlwrdRo=";
   };
 }