Remove any line separators from the key data

This allows folks to use the java.util.Base64 (at least under Java8) which doesn't handle the line separators.
Thanks much for the code!

Author: j256

src/main/java/com/mastercard/developer/utils/EncryptionUtils.java

@@ -47,13 +47,15 @@ public static PrivateKey loadDecryptionKey(String keyFilePath) throws GeneralSec
             // OpenSSL / PKCS#1 Base64 PEM encoded file
             keyDataString = keyDataString.replace(PKCS_1_PEM_HEADER, "");
             keyDataString = keyDataString.replace(PKCS_1_PEM_FOOTER, "");
+            keyDataString = keyDataString.replace(System.lineSeparator(), "");
             return readPkcs1PrivateKey(base64Decode(keyDataString));
         }
 
         if (keyDataString.contains(PKCS_8_PEM_HEADER)) {
             // PKCS#8 Base64 PEM encoded file
             keyDataString = keyDataString.replace(PKCS_8_PEM_HEADER, "");
             keyDataString = keyDataString.replace(PKCS_8_PEM_FOOTER, "");
+            keyDataString = keyDataString.replace(System.lineSeparator(), "");
             return readPkcs8PrivateKey(base64Decode(keyDataString));
         }