workflow: Migrate to equinox-io/setup-release-tool (#614)

Author: kyleconroy

.github/workflows/equinox.yml

@@ -29,7 +29,7 @@ jobs:
       uses: actions/setup-go@v2
       with:
         go-version: '1.14'
-    - uses: equinox-io/setup@master
+    - uses: equinox-io/setup-release-tool@v1
     - name: equinox release
       env:
         EQUINOX_API_TOKEN: ${{ secrets.EQUINOX_API_TOKEN }}
@@ -46,7 +46,7 @@ jobs:
       uses: actions/setup-go@v2
       with:
         go-version: '1.14'
-    - uses: equinox-io/setup@master
+    - uses: equinox-io/setup-release-tool@v1
     - name: equinox release
       env:
         EQUINOX_API_TOKEN: ${{ secrets.EQUINOX_API_TOKEN }}