fix: Fix semantic-release deploys

Updated .travis.yml to match the example provided in the documentation
https://semantic-release.gitbooks.io/semantic-release/content/docs/recipes/travis.html

.travis.yml

@@ -9,5 +9,8 @@ before_script:
   - npm prune
 script:
   - npm start
-after_success:
-  - npm run semantic-release
+deploy:
+  provider: script
+  skip_cleanup: true
+  script:
+    - npx semantic-release

package.json

@@ -13,8 +13,7 @@
     "test": "jest",
     "cm": "git-cz",
     "precommit": "lint-staged",
-    "commitmsg": "commitlint --edit",
-    "semantic-release": "semantic-release pre && npm publish && semantic-release post"
+    "commitmsg": "commitlint --edit"
   },
   "config": {
     "commitizen": {