Replaced Travis-CI with GHA.

Author: dblock

.github/workflows/rubocop.yml

@@ -0,0 +1,17 @@
+name: lint
+
+on: [push, pull_request]
+
+jobs:
+  lint:
+    name: RuboCop
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: "2.7.7"
+          bundler-cache: true
+      - name: Run RuboCop
+        run: bundle exec rubocop

.github/workflows/test.yml

@@ -0,0 +1,32 @@
+name: test
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Setup Firefox
+        uses: browser-actions/setup-firefox@latest
+        with:
+          firefox-version: "54.0"
+      - name: Download geckodriver
+        uses: browser-actions/setup-geckodriver@latest
+        with:
+          geckodriver-version: "0.18.0"
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: "2.7.7"
+          bundler-cache: true
+      - name: Start MongoDB
+        uses: supercharge/mongodb-github-action@1.7.0
+        with:
+          mongodb-version: "5"
+          mongodb-db: slack_api_explorer_test
+      - name: Run tests
+        uses: GabrielBB/xvfb-action@v1
+        with:
+          run: bundle exec rake

.travis.yml

@@ -1,6 +1,6 @@
 source 'http://rubygems.org'
 
-ruby '2.6.2'
+ruby '2.7.7'
 
 gem 'giphy'
 gem 'irb'
@@ -19,7 +19,7 @@ gem 'unicorn'
 group :development, :test do
   gem 'foreman'
   gem 'rake'
-  gem 'rubocop'
+  gem 'rubocop', '0.76.0'
 end
 
 group :development do

Gemfile

@@ -10,7 +10,7 @@ GEM
       tzinfo (~> 1.1)
     addressable (2.6.0)
       public_suffix (>= 2.0.2, < 4.0)
-    ast (2.4.0)
+    ast (2.4.2)
     async (1.17.1)
       console (~> 1.0)
       nio4r (~> 2.3)
@@ -103,8 +103,10 @@ GEM
     i18n (1.6.0)
       concurrent-ruby (~> 1.0)
     ice_nine (0.11.2)
-    irb (1.0.0)
-    jaro_winkler (1.5.2)
+    io-console (0.6.0)
+    irb (1.6.2)
+      reline (>= 0.3.0)
+    jaro_winkler (1.5.4)
     jsonpath (0.9.0)
       multi_json
       to_regexp (~> 0.2.1)
@@ -121,7 +123,7 @@ GEM
       mime-types-data (~> 3.2015)
     mime-types-data (3.2019.0331)
     mini_mime (1.0.1)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.8.1)
     minitest (5.11.3)
     mongo (2.8.0)
       bson (>= 4.4.2, < 5.0.0)
@@ -151,14 +153,15 @@ GEM
       slack-ruby-bot (>= 0.10.5)
     newrelic_rpm (6.2.0.354)
     nio4r (2.3.1)
-    nokogiri (1.10.2)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.14.0)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
     oj (3.7.12)
-    parallel (1.17.0)
-    parser (2.6.2.1)
-      ast (~> 2.4.0)
-    psych (3.1.0)
+    parallel (1.22.1)
+    parser (3.2.0.0)
+      ast (~> 2.4.1)
     public_suffix (3.0.3)
+    racc (1.6.2)
     rack (2.0.7)
     rack-accept (0.4.5)
       rack (>= 0.4)
@@ -170,10 +173,12 @@ GEM
       rack
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
-    rainbow (3.0.0)
+    rainbow (3.1.1)
     raindrops (0.19.0)
     rake (12.3.2)
     regexp_parser (1.4.0)
+    reline (0.3.2)
+      io-console (~> 0.5)
     representable (3.0.4)
       declarative (< 0.1.0)
       declarative-option (< 0.2.0)
@@ -197,15 +202,14 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.8.0)
     rspec-support (3.8.0)
-    rubocop (0.67.2)
+    rubocop (0.76.0)
       jaro_winkler (~> 1.5.1)
       parallel (~> 1.10)
-      parser (>= 2.5, != 2.5.1.1)
-      psych (>= 3.1.0)
+      parser (>= 2.6)
       rainbow (>= 2.2.2, < 4.0)
       ruby-progressbar (~> 1.7)
-      unicode-display_width (>= 1.4.0, < 1.6)
-    ruby-progressbar (1.10.0)
+      unicode-display_width (>= 1.4.0, < 1.7)
+    ruby-progressbar (1.11.0)
     rubyzip (1.2.2)
     safe_yaml (1.0.5)
     selenium-webdriver (3.141.0)
@@ -245,7 +249,7 @@ GEM
     unf (0.1.4)
       unf_ext
     unf_ext (0.0.7.5)
-    unicode-display_width (1.5.0)
+    unicode-display_width (1.6.1)
     unicorn (5.5.0)
       kgio (~> 2.6)
       raindrops (~> 0.7)
@@ -290,7 +294,7 @@ DEPENDENCIES
   rack-test
   rake
   rspec
-  rubocop
+  rubocop (= 0.76.0)
   selenium-webdriver
   slack-ruby-bot-server
   slack-ruby-bot-server-mailchimp
@@ -299,7 +303,7 @@ DEPENDENCIES
   webmock
 
 RUBY VERSION
-   ruby 2.6.2p47
+   ruby 2.7.7p221
 
 BUNDLED WITH
-   1.17.2
+   2.3.26