Add private key to gh actions config

Signed-off-by: Jacek Ciwiś <jacek.ciwis@gmail.com>

Author: kruc

.github/workflows/release.yaml

@@ -3,28 +3,25 @@ name: goreleaser
 on:
   push:
     tags:
-      - '*'
+      - "*"
 
 jobs:
   goreleaser:
     runs-on: ubuntu-latest
     steps:
-      -
-        name: Checkout
+      - name: Checkout
         uses: actions/checkout@v2
-      -
-        name: Unshallow
+      - name: Unshallow
         run: git fetch --prune --unshallow
-      -
-        name: Set up Go
+      - name: Set up Go
         uses: actions/setup-go@v1
         with:
           go-version: 1.14.x
-      -
-        name: Run GoReleaser
+      - name: Run GoReleaser
         uses: goreleaser/goreleaser-action@v1
         with:
           version: latest
           args: release --rm-dist
+          key: ${{ secrets.PRIVATE_KEY }}
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}