fix: bumps release workflow to go1.21

Author: cludden

.github/workflows/release.yml

@@ -25,7 +25,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v2
         with:
-          go-version: "1.20"
+          go-version: "1.21"
       - name: Import GPG key
         id: import_gpg
         uses: crazy-max/ghaction-import-gpg@v5.2.0
@@ -39,4 +39,5 @@ jobs:
           args: release --rm-dist
         env:
           GPG_FINGERPRINT: ${{ steps.import_gpg.outputs.fingerprint }}
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}
+          GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}