test: Remove unit tests for Node v8.

Author: jwalton

.travis.yml

@@ -1,29 +1,30 @@
 language: node_js
 node_js:
-  - 'node'
-  - '10'
-  - '8'
+    - 'node'
+    - '14'
+    - '12'
+    - '10'
 cache:
-  directories:
-    - ~/.npm
+    directories:
+        - ~/.npm
 
 before_install:
-  - npm install -g npm
+    - npm install -g npm
 install:
-  - travis_retry npm install
+    - travis_retry npm install
 after_success:
-  - 'cat ./coverage/lcov.info | ./node_modules/.bin/coveralls'
+    - 'cat ./coverage/lcov.info | ./node_modules/.bin/coveralls'
 
 jobs:
-  include:
-    - stage: release
-      node_js: lts/*
-      before_install:
-        - npm install -g npm
-      install:
-        - travis_retry npm install
-      before_script: skip
-      script: npm run semantic-release
-      after_success: skip
-      after_failure: skip
-      after_script: skip
+    include:
+        - stage: release
+          node_js: lts/*
+          before_install:
+              - npm install -g npm
+          install:
+              - travis_retry npm install
+          before_script: skip
+          script: npm run semantic-release
+          after_success: skip
+          after_failure: skip
+          after_script: skip