Scala Common Enrich: bump commons codec to 1.10

[fblundun]

[info] DecodeBase64UrlSpec
[info] 
[info] This is a specification to test the decodeBase64Url function
[info] 
[info] + decodeBase64Url should return failure if passed a null
[info] x decodeBase64Url should not return failure on any other string
[error]  A counter-example is '돢겻' (after 4 tries)
[error]  'Failure(Field [e]: exception Base64-decoding [돢겻] (URL-safe encoding): [null])' is not Success (conversionUtilsSpecs.scala:124)
[info] 
[info] + decodeBase64Url should correctly decode valid Base64 (URL-safe) encoded strings
[info] 
[info] Total for specification DecodeBase64UrlSpec
[info] Finished in 2 ms
[info] 3 examples, 1 failure, 0 error

As seen in this Travis build.

[fblundun]

Looks like this is the failing test

[fblundun]

Oddly, when I call the function on "돢겻" in the sbt console it doesn't fail:

scala> ConversionUtils.decodeBase64Url("e","돢겻")
res5: scalaz.Validation[String,String] = Success()

maybe copy-and-pasting the characters involved changing their encoding or something.

[fblundun]

An example with a different failing input

[fblundun]

The Base64 class in commons-codec 1.5 is not thread-safe. This can cause corruption in the test suite (when tests are run in parallel) and in Stream Enrich (when multiple KCL threads simultaneously access an instance of the class).

The problematic instance

[fblundun]

The bug in the base 64 library: https://issues.apache.org/jira/browse/CODEC-96