Updated firefox packages fix security vulnerabilities

Updated firefox packages fix security vulnerabilities: Mozilla: Memory safety bugs fixed in Firefox ESR 52.8 (CVE-2018-5150). Mozilla: Backport critical security fixes in Skia (CVE-2018-5183). Mozilla: Use-after-free with SVG animations and clip paths (CVE-2018-5154). Mozilla: Use-after-free with SVG animations and text paths (CVE-2018-5155). Mozilla: Same-origin bypass of PDF Viewer to view protected PDF files (CVE-2018-5157). Mozilla: Malicious PDF can inject JavaScript into PDF Viewer (CVE-2018-5158). Mozilla: Integer overflow and out-of-bounds write in Skia (CVE-2018-5159). Mozilla: Lightweight themes can be installed without user interaction (CVE-2018-5168). Mozilla: Buffer overflow during UTF-8 to Unicode string conversion through legacy extension (CVE-2018-5178). Rootcerts has been updated to 20180411.