update ruby

Author: LiamConnors

.circleci/config.yml

@@ -7,7 +7,7 @@ jobs:
 
     docker:
       # a packaged system that has the instructions for creating a running container.
-      - image: circleci/ruby:2.3.3
+      - image: circleci/ruby:2.7.4
 
     # actions that need to be taken to perform your job
     steps:
@@ -38,7 +38,7 @@ jobs:
           command: |
             bundle install --path vendor/bundle
             sudo rm /etc/apt/sources.list
-            echo "deb http://archive.debian.org/debian/ jessie main contrib non-free" | sudo tee -a /etc/apt/sources.list
+            echo "deb [trusted=yes] http://archive.debian.org/debian/ jessie main contrib non-free" | sudo tee -a /etc/apt/sources.list
             echo "deb-src http://archive.debian.org/debian jessie main contrib non-free" | sudo tee -a /etc/apt/sources.list
             echo "Acquire::Check-Valid-Until false;" | sudo tee -a /etc/apt/apt.conf.d/10-nocheckvalid
             echo '# Package: *\nPin: origin "archive.debian.org"\nPin-Priority: 500' | sudo tee -a /etc/apt/preferences.d/10-archive-pin