Update dependency ssri to v6 [SECURITY]

Author: renovate[bot]

package.json

@@ -44,7 +44,7 @@
     "request-capture-har": "^1.2.2",
     "rimraf": "^2.5.0",
     "semver": "^5.1.0",
-    "ssri": "^5.3.0",
+    "ssri": "^6.0.0",
     "strip-ansi": "^4.0.0",
     "strip-bom": "^3.0.0",
     "tar-fs": "^1.16.0",

yarn.lock

@@ -2980,6 +2980,11 @@ fb-watchman@^2.0.0:
   dependencies:
     bser "^2.0.0"
 
+figgy-pudding@^3.5.1:
+  version "3.5.2"
+  resolved "https://registry.yarnpkg.com/figgy-pudding/-/figgy-pudding-3.5.2.tgz#b4eee8148abb01dcf1d1ac34367d59e12fa61d6e"
+  integrity sha512-0btnI/H8f2pavGMN8w40mlSKOfTK2SVJmBfBeVIj3kNw0swwgzyRq0d5TJVOwodFmtvpPeWPN/MCcfuWF0Ezbw==
+
 figures@^1.3.5:
   version "1.7.0"
   resolved "https://registry.yarnpkg.com/figures/-/figures-1.7.0.tgz#cbe1e3affcf1cd44b80cadfed28dc793a9701d2e"
@@ -6923,12 +6928,12 @@ sshpk@^1.14.2, sshpk@^1.7.0:
     jsbn "~0.1.0"
     tweetnacl "~0.14.0"
 
-ssri@^5.3.0:
-  version "5.3.0"
-  resolved "https://registry.yarnpkg.com/ssri/-/ssri-5.3.0.tgz#ba3872c9c6d33a0704a7d71ff045e5ec48999d06"
-  integrity sha512-XRSIPqLij52MtgoQavH/x/dU1qVKtWUAAZeOHsR9c2Ddi4XerFy3mc1alf+dLJKl9EUIm/Ht+EowFkTUOA6GAQ==
+ssri@^6.0.0:
+  version "6.0.2"
+  resolved "https://registry.yarnpkg.com/ssri/-/ssri-6.0.2.tgz#157939134f20464e7301ddba3e90ffa8f7728ac5"
+  integrity sha512-cepbSq/neFK7xB6A50KHN0xHDotYzq58wWCa5LeWqnPrHG8GzfEjO/4O8kpmcGW+oaxkvhEJCWgbgNk4/ZV93Q==
   dependencies:
-    safe-buffer "^5.1.1"
+    figgy-pudding "^3.5.1"
 
 stable@^0.1.6:
   version "0.1.8"