bump ruby version and circle image

Signed-off-by: vsoch <vsoch@users.noreply.github.com>

.circleci/config.yml

@@ -4,7 +4,7 @@ version: 2
 jobs:
   build:
     docker:
-      - image: circleci/ruby:2.4.1
+      - image: cimg/ruby:2.7.0
     working_directory: ~/repo
     environment:
       - JEKYLL_ENV: production
@@ -14,14 +14,14 @@ jobs:
       - checkout
       - restore_cache:
           keys:
-          - rubygems-v1
+          - rubygems-v2
       - run:
           name: Bundle Install
           command: |
               cd ~/repo
               bundle check || bundle install
       - save_cache:
-          key: rubygems-v1
+          key: rubygems-v2
           paths:
             - vendor/bundle
       - run:

Gemfile

@@ -1,5 +1,5 @@
 source 'https://rubygems.org'
 
-ruby '2.4.1'
+ruby '2.7.0'
 
 gem 'jekyll'

docs/projects/slopi-communication.md

@@ -16,4 +16,4 @@ parent: Projects
 
 ---
 
-Please note: SLOPI was incubated at Good Labs but has moved to https://github.com/pdurbin/slopi-communication
+Please note: SLOPI was incubated at Good Labs but has moved to [https://github.com/pdurbin/slopi-communication](https://github.com/pdurbin/slopi-communication)