Fix deploy versions

.github/workflows/main.yml

@@ -9,7 +9,7 @@ jobs:
     name: build and deploy
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@master
+    - uses: actions/checkout@v2
     
     - name: Build Gatsby Site
       uses: jzweifel/gatsby-cli-github-action@master
@@ -17,7 +17,7 @@ jobs:
         gatsby-arg: build
 
     - name: Deply via ssh
-      uses: appleboy/scp-action@master
+      uses: appleboy/scp-action@v0.1.1
       with:
         host: ${{ secrets.HOST }}
         username: ${{ secrets.WEBMASTER_USERNAME }}