feat: set ssh input optional when non has migrations

Author: raulpe7eira

action.yml

@@ -23,7 +23,7 @@ inputs:
     default: true
   SSH_PRIVATE_KEY:
     description: 'Your ssh private key that is paired with a public key that is uploaded to Gigalixir'
-    required: true
+    required: ${MIGRATIONS}
 
 runs:
   using: 'node12'

index.js

@@ -93,7 +93,7 @@ async function run() {
     const gigalixirUsername = core.getInput('GIGALIXIR_USERNAME', requiredInputOptions);
     const gigalixirPassword = core.getInput('GIGALIXIR_PASSWORD', requiredInputOptions);
     const migrations = core.getInput('MIGRATIONS', requiredInputOptions);
-    const sshPrivateKey = core.getInput('SSH_PRIVATE_KEY', requiredInputOptions);
+    const sshPrivateKey = core.getInput('SSH_PRIVATE_KEY', { required: migrations });
 
     await core.group("Installing gigalixir", async () => {
       await exec.exec('pip3 install gigalixir')