Readability of Client Certificate PrivateKey Not Checked Correctly in BPE

The file-system readability of the client certificate private-key file in the Business Process Engine is not checked correctly (copy-paste error).

dsf/dsf-bpe/dsf-bpe-server/src/main/java/dev/dsf/bpe/spring/config/FhirClientConfig.java

Lines 152 to 153 in 20b8a1c

    
           if (!Files.isReadable(certificatePath)) 
        
           	throw new IOException("Private key file '" + privateKeyPath.toString() + "' not readable");

Issue for tracking fix from @jbellmann via PR #168

	if (!Files.isReadable(certificatePath))
	throw new IOException("Private key file '" + privateKeyPath.toString() + "' not readable");