ci: 🎡 rework travis-ci semantic-release workflow

.releaserc.json

@@ -0,0 +1,3 @@
+{
+    "branches": ["master"]
+}

.travis.yml

@@ -1,17 +1,20 @@
+os: linux
+dist: bionic
 language: node_js
-cache:
-  directories:
-    - ~/.npm
+cache: npm
 notifications:
   email: false
 node_js:
-  - '14.2.0'
-script:
-  - npm run test
-after_success:
-  - npm run report-coverage
-  - npm run travis-deploy-once "npm run semantic-release"
-branches:
-  only:
-    - master
-
+  - "14.15.1"
+jobs:
+  include:
+    - stage: test
+      script: npm run test
+    - stage: npm release
+      if: branch = master
+      script:
+        - npm run report-coverage
+        - echo "Deploying to npm ..."
+      deploy:
+        provider: script
+        script: npx semantic-release