fix: a test certtificate end marker

- It is supposed to have 5 `-`s, but one of the test cert value had only 4 `-`s.
- Previous version of `bc-java` did not check for ending `-----` but now it does. See `PemReader.java` change in [the commit](bcgit/bc-java@5ca7b06].
- I did not find any mentioning to this specifc change in BouncyCastle release notes, so it appears to be undocumented change.

[#187388114]

server/src/test/java/org/cloudfoundry/identity/uaa/util/KeyWithCertTest.java

@@ -108,7 +108,7 @@ public static void addProvider() {
         "PwMhO0+dASJ83e2Bu63pKO808BrVjD51sSEMb0qwFc5IV6RzK/mkJgO0fphhoqOm\n" +
         "ZLzGcSYwCmj0Vc0GO5NgnFVZg4N9CyYCpDMeQynumlrNhRgnZRzlqXtQgL2bQDiu\n" +
         "coxNL/KY05iVlE1bmq/fzNEmEi2zf3dQV8CNSYs=\n" +
-        "-----END CERTIFICATE----\n";
+        "-----END CERTIFICATE-----\n";
 
     // openssl req -out cert.pem -nodes -keyout private.key -newkey rsa:2048 -new -x509
     public static final String opensslCert = "-----BEGIN CERTIFICATE-----\n" +