build(CI): fix syntax error for actions

.github/workflows/build_packages.yaml

@@ -283,8 +283,9 @@ jobs:
     steps:
     - name: get_version
       run: |
-        version=$(echo ${{ github.ref }} | sed -r  "s ^refs/heads/|^refs/tags/(.*) \1 g")
-        echo "VERSION=$verison" >> $GITHUB_ENV
+        echo 'version<<EOF' >> $GITHUB_ENV
+        echo ${{ github.ref }} | sed -r  "s ^refs/heads/|^refs/tags/(.*) \1 g" >> $GITHUB_ENV
+        echo 'EOF' >> $GITHUB_ENV
     - uses: actions/download-artifact@v2
       with:
         name: emqx
@@ -313,9 +314,9 @@ jobs:
         aws configure set aws_secret_access_key ${{ secrets.AWS_SECRET_ACCESS_KEY }}
         aws configure set default.region us-west-2
 
-        aws s3 cp --recursive _packages/emqx s3://packages.emqx/emqx-ce/$VERSION
-        aws s3 cp --recursive _packages/emqx-edge s3://packages.emqx/emqx-edge/$VERSION
-        aws cloudfront create-invalidation --distribution-id E170YEULGLT8XB --paths "/emqx-ce/$VERSION/*,/emqx-edge/$VERSION/*"
+        aws s3 cp --recursive _packages/emqx s3://packages.emqx/emqx-ce/${{ env.version }}
+        aws s3 cp --recursive _packages/emqx-edge s3://packages.emqx/emqx-edge/${{ env.version }}
+        aws cloudfront create-invalidation --distribution-id E170YEULGLT8XB --paths "/emqx-ce/${{ env.version }}/*,/emqx-edge/${{ env.version }}/*"
 
         mkdir packages
         mv _packages/emqx/* packages
@@ -338,7 +339,7 @@ jobs:
              -H "Content-Type: application/json" \
              -H "token: ${{ secrets.EMQX_IO_TOKEN }}" \
              -X POST \
-             -d "{\"repo\":\"emqx/emqx\", \"tag\": \"${VERSION}\" }" \
+             -d "{\"repo\":\"emqx/emqx\", \"tag\": \"${{ env.version }}\" }" \
              ${{ secrets.EMQX_IO_RELEASE_API }}
     - name: push docker image to docker hub
       if: github.event_name == 'release'
@@ -359,7 +360,7 @@ jobs:
           -H "Authorization: token ${{ secrets.AccessToken }}" \
           -H "Accept: application/vnd.github.v3+json" \
           -X POST \
-          -d "{\"ref\":\"v1.0.0\",\"inputs\":{\"version\": \"${VERSION}\", \"emqx_ce\": \"true\"}}" \
+          -d "{\"ref\":\"v1.0.0\",\"inputs\":{\"version\": \"${{ env.version }}\", \"emqx_ce\": \"true\"}}" \
           https://api.github.com/repos/emqx/emqx-ci-helper/actions/workflows/update_repos.yaml/dispatches
     - uses: geekyeggo/delete-artifact@v1
       with: