refactor: rename semver-cargo -> cargo

lib/config/definitions.js

@@ -361,12 +361,12 @@ const options = [
     description: 'Version scheme to use for filtering and comparisons',
     type: 'string',
     allowedValues: [
+      'cargo',
       'docker',
       'loose',
       'pep440',
       'ruby',
       'semver',
-      'semver-cargo',
       'semver-composer',
       'semver-hashicorp',
     ],

test/versioning/semver-cargo.spec.js → test/versioning/cargo.spec.js

-const semver = require('../../lib/versioning/semver-cargo');
+const semver = require('../../lib/versioning/cargo');
 
 describe('semver.matches()', () => {
   it('handles comma', () => {