chore: update semantic-release to handle 'main' branch

Author: billiegoose

.releaserc

@@ -0,0 +1,9 @@
+branches:
+  - '+([0-9])?(.{+([0-9]),x}).x'
+  - 'main'
+  - 'next'
+  - 'next-major'
+  - name: 'beta'
+    prerelease: true
+  - name: 'alpha'
+    prerelease: true

package.json

@@ -43,7 +43,7 @@
     "ssh2": "^0.6.1"
   },
   "devDependencies": {
-    "semantic-release": "15.1.7",
+    "semantic-release": "16.0.3",
     "travis-deploy-once": "4.4.1"
   }
 }