Ruby 2.7.1 and update gems.

Author: stefansundin

Diff for: .ruby-version

@@ -1 +1 @@
-2.6.6
+2.7.1

Diff for: Dockerfile

@@ -11,7 +11,7 @@
 # docker build --squash -t stefansundin/rssbox .
 # docker push stefansundin/rssbox
 
-FROM stefansundin/ruby:2.6
+FROM stefansundin/ruby:2.7
 LABEL maintainer="stefansundin https://github.com/stefansundin/rssbox"
 
 # install gem dependencies

Diff for: Gemfile

@@ -1,6 +1,6 @@
 source "https://rubygems.org"
 
-ruby ">= 2.6.0"
+ruby ">= 2.7.0"
 
 gem "yajl-ruby", require: "yajl/json_gem"
 gem "rake", require: false

Diff for: Gemfile.lock

@@ -19,7 +19,7 @@ GEM
       rake (>= 12)
     heroku-env (0.1.4)
     io-console (0.5.6)
-    irb (1.2.3)
+    irb (1.2.4)
       reline (>= 0.0.1)
     loofah (2.5.0)
       crass (~> 1.0.2)
@@ -45,7 +45,7 @@ GEM
     pry-remote (0.1.8)
       pry (~> 0.9)
       slop (~> 3.0)
-    public_suffix (4.0.4)
+    public_suffix (4.0.5)
     puma (4.3.3)
       nio4r (~> 2.0)
     rack (2.2.2)
@@ -54,7 +54,7 @@ GEM
     rack-ssl-enforcer (0.2.9)
     rake (13.0.1)
     rbtree3 (0.6.0)
-    redis (4.1.3)
+    redis (4.1.4)
     redis-namespace (1.7.0)
       redis (>= 3.0.4)
     reline (0.1.4)
@@ -111,7 +111,7 @@ DEPENDENCIES
   yajl-ruby
 
 RUBY VERSION
-   ruby 2.6.6p146
+   ruby 2.7.1p83
 
 BUNDLED WITH
-   1.17.2
+   2.1.4