feat: drop support for Travis CI and Jenkins

BREAKING CHANGE: Only compatible with GH Actions

package.json

@@ -14,8 +14,7 @@
   },
   "scripts": {
     "lint": "./node_modules/.bin/eslint *.js bin/*.js",
-    "semantic-release": "semantic-release pre && npm publish && semantic-release post",
-    "test": "npm run lint"
+    "semantic-release": "semantic-release pre && npm publish && semantic-release post"
   },
   "keywords": [
     "semantic-release",
@@ -24,7 +23,6 @@
     "dist-tag"
   ],
   "dependencies": {
-    "@krux/condition-jenkins": "^1.0.1",
     "semantic-release": "^6.3.6"
   },
   "engines": {

verifyConditions.js

@@ -1,17 +1,8 @@
 const utils = require('./utils');
 
 module.exports = function (pluginConfig, config, cb) {
-  let defaultVerifyConditions;
-
-  if (config.env.TRAVIS) {
-    defaultVerifyConditions = require('@semantic-release/condition-travis');
-  } else if (config.env.GITHUB_REF) {
-    defaultVerifyConditions = require('./condition-github-actions');
-  } else {
-    defaultVerifyConditions = require('@krux/condition-jenkins');
-  }
-  
-  const branch = config.env.TRAVIS_BRANCH || config.env.GIT_LOCAL_BRANCH ||  utils.ghActionsBranch(config.env);
+  let verifyConditions = require('./condition-github-actions');
+  const branch = utils.ghActionsBranch(config.env);
 
   // update semantic-release configuration to publish:
   // - from this branch
@@ -25,5 +16,5 @@ module.exports = function (pluginConfig, config, cb) {
   }
 
   // run default build checks with the new configuration
-  return defaultVerifyConditions(pluginConfig, config, cb);
+  return verifyConditions(pluginConfig, config, cb);
 };