Update release toolkit to 6.1

Author: oguzkocer

Gemfile.lock

@@ -166,15 +166,14 @@ GEM
     fastlane-plugin-appcenter (1.11.1)
     fastlane-plugin-sentry (1.14.0)
       os (~> 1.1, >= 1.1.4)
-    fastlane-plugin-wpmreleasetoolkit (6.0.0)
+    fastlane-plugin-wpmreleasetoolkit (6.1.0)
       activesupport (~> 5)
       bigdecimal (~> 1.4)
       buildkit (~> 1.5)
       chroma (= 0.2.0)
       diffy (~> 3.3)
       git (~> 1.3)
       google-cloud-storage (~> 1.31)
-      jsonlint (~> 0.3)
       nokogiri (~> 1.11)
       octokit (~> 4.18)
       parallel (~> 1.14)
@@ -200,8 +199,8 @@ GEM
       retriable (>= 2.0, < 4.a)
       rexml
       webrick
-    google-apis-iamcredentials_v1 (0.15.0)
-      google-apis-core (>= 0.9.0, < 2.a)
+    google-apis-iamcredentials_v1 (0.16.0)
+      google-apis-core (>= 0.9.1, < 2.a)
     google-apis-playcustomapp_v1 (0.12.0)
       google-apis-core (>= 0.9.1, < 2.a)
     google-apis-storage_v1 (0.19.0)
@@ -212,7 +211,7 @@ GEM
     google-cloud-env (1.6.0)
       faraday (>= 0.17.3, < 3.0)
     google-cloud-errors (1.3.0)
-    google-cloud-storage (1.43.0)
+    google-cloud-storage (1.44.0)
       addressable (~> 2.8)
       digest-crc (~> 0.4)
       google-apis-iamcredentials_v1 (~> 0.1)
@@ -235,9 +234,6 @@ GEM
       concurrent-ruby (~> 1.0)
     jmespath (1.6.1)
     json (2.6.2)
-    jsonlint (0.3.0)
-      oj (~> 3)
-      optimist (~> 3)
     jwt (2.5.0)
     memoist (0.16.2)
     mini_magick (4.11.0)
@@ -259,8 +255,6 @@ GEM
     octokit (4.25.1)
       faraday (>= 1, < 3)
       sawyer (~> 0.9)
-    oj (3.13.23)
-    optimist (3.0.1)
     options (2.3.2)
     optparse (0.1.1)
     os (1.1.4)