Update r1.11 to new heteronyms list
# What does this PR do ?

Move over to new heteronyms list based on Wikipedia's [heteronyms short list](https://en.wikipedia.org/wiki/Heteronym_(linguistics)#English) and the [Wikipedia Homograph Data](https://github.com/google-research-datasets/WikipediaHomographData/blob/master/data/wordids.tsv).

**Collection**: TTS

# Changelog 
- Update existing TTS configs to use the new heteronyms list
- Remove outdated heteronyms list
- Add missing pronunciation of "merchandise" to CMUdict