Adjust changelog

Author: mielvds

CHANGELOG.md

@@ -15,6 +15,10 @@
     - added support for testing blank-node identifier maps. 
     - added support for testing with different hashing algorithms
 
+### Fixed
+
+- Invalid IRI base values within lists are now skipped when serializing to RDF. Fixes [toRdf#tli12](https://w3c.github.io/json-ld-api/tests/toRdf-manifest#tli12) and [toRdf#tli14](https://w3c.github.io/json-ld-api/tests/toRdf-manifest#tli14).
+
 ### Changed
   - migrate `canon.py` to `rdflib`:
     - now use `rdflib` for RDF term type checking (e.g., checking is something is a bnode), looping over triples/quads, nquads serialization and constructing RDF terms  (custom deepcopy is no longer needed)