ci(travis): use major.minor for semantic-release version [skip ci]

myii · myii · commit facbaa1e392d · 2019-12-22T00:59:42.000Z
* Automated using myii/ssf-formula#112
diff --git a/.travis.yml b/.travis.yml
@@ -124,4 +124,4 @@ jobs:
         # Deprecated `skip_cleanup` can now be avoided, `cleanup: false` is by default
         edge: true
         # Run `semantic-release`
-        script: 'npx semantic-release@15'
+        script: 'npx semantic-release@15.14'
