Adjust pgp import

Author: mpilquist

.github/workflows/ci.yml

@@ -304,6 +304,6 @@ jobs:
           path: project/target
 
       - name: Import signing key
-        run: echo $PGP_SECRET | gpg --import
+        run: echo $PGP_SECRET | base64 -d | gpg --import
 
       - run: sbt ++${{ matrix.scala }} release

build.sbt

@@ -25,7 +25,7 @@ ThisBuild / githubWorkflowTargetTags += "v*"
 
 ThisBuild / githubWorkflowPublishPreamble +=
   WorkflowStep.Run(
-    List("echo $PGP_SECRET | gpg --import"),
+    List("echo $PGP_SECRET | base64 -d | gpg --import"),
     name = Some("Import signing key"))
 
 ThisBuild / githubWorkflowPublish := Seq(WorkflowStep.Sbt(List("release")))