fix: workflows updated (#259)

* Update npm-publish-prerelease.yml

* fix: patch publish workflow

Author: radko93

.github/workflows/npm-publish-prerelease.yml

@@ -6,6 +6,7 @@ on:
 
 jobs:
   publish-npm:
+    if: "github.event.release.prerelease"
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2

.github/workflows/npm-publish.yml

@@ -7,6 +7,7 @@ on:
 jobs:
   publish-npm:
     runs-on: ubuntu-latest
+    if: "!github.event.release.prerelease"
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v2