fix: add newline char to clear pipeline

Author: Vikas-Sajanani

src/main/java/com/spotify/github/v3/clients/PKCS1PEMKey.java

@@ -121,4 +121,4 @@ private static byte[] toPkcs8(final byte[] pkcs1Bytes) {
     System.arraycopy(pkcs1Bytes, 0, pkcs8bytes, pkcs8Header.length, pkcs1Bytes.length);
     return pkcs8bytes;
   }
-}
+}