chore(deps): update piper-tts requirement from >=1.2.0 to >=1.8.0

[dependabot]

Updates the requirements on piper-tts to permit the latest version.

Release notes

Sourced from piper-tts's releases.

v1.8.0

• Add Thai phonemizer using TLTK in the new th extra
  • --data.phoneme_type thai for training; "phoneme_type": "thai" in a voice config for synthesis
  • espeak-ng's Thai voice is a placeholder: its th_dict holds no lexicon, so unspaced Thai is never segmented; the leading vowels เ แ โ ใ ไ are not reordered; and a tone mark deletes the syllable's vowel, collapsing ป่า/ป้า/ป๊า/ป๋า to the same phonemes
  • TLTK does dictionary-based word segmentation and emits a tone digit (1-5) per syllable, in the same style phonemize_chinese uses for Mandarin tones
  • The whole inventory already has ids in the default IPA map, so Thai voices stay compatible with the IPA-based (espeak) warmstart
• Add script/setup --th, and install the th extra in CI so the Thai tests run

Changelog

Sourced from piper-tts's changelog.

1.8.0

• Add Thai phonemizer using TLTK in the new th extra
  • --data.phoneme_type thai for training; "phoneme_type": "thai" in a voice config for synthesis
  • espeak-ng's Thai voice is a placeholder: its th_dict holds no lexicon, so unspaced Thai is never segmented; the leading vowels เ แ โ ใ ไ are not reordered; and a tone mark deletes the syllable's vowel, collapsing ป่า/ป้า/ป๊า/ป๋า to the same phonemes
  • TLTK does dictionary-based word segmentation and emits a tone digit (1-5) per syllable, in the same style phonemize_chinese uses for Mandarin tones
  • The whole inventory already has ids in the default IPA map, so Thai voices stay compatible with the IPA-based (espeak) warmstart
• Add script/setup --th, and install the th extra in CI so the Thai tests run

1.7.0

• Add Japanese phonemizer using OpenJTalk (pyopenjtalk-plus) in the new ja extra
  • --data.phoneme_type japanese for training; "phoneme_type": "japanese" in a voice config for synthesis
  • espeak-ng has no kanji coverage (it reads out Unicode character names) and no pitch accent
  • Full-context labels are parsed for pitch accent and mapped to IPA, so Japanese voices stay compatible with the IPA-based (espeak) warmstart
• Add script/setup --ja, and install the ja extra in CI so the Japanese tests run
• libpiper: add piper_create_options and piper_create_with_options(), with piper_create() kept as a wrapper for ABI compatibility

1.6.1

• Run the g2pW model through piper.g2pw_onnx instead of g2pw.api, dropping torch (~750 MB installed) and requests from the zh extra
  • g2pw.api imports torch only to build padded tensors and iterate batches; the model itself already ran under onnxruntime
  • Also 1.5-2x faster, since it no longer forks DataLoader worker processes on every call
  • g2pW is still required, for its pinyin/bopomofo lookup tables

1.6.0

• Add Hebrew phonemizer using Nakdimon

1.5.0

• Add libpiper C++ CLI executable ported from the legacy Piper repository, plus a C++ test suite
• Fix libpiper builds on Windows (MSVC, MSYS2-GCC) and Windows CI
• Bump embedded espeak-ng version
• Add default speaker id for multi-speaker voices
• Add vowel clustering support (--data.vowel_clusters)
• Add in-memory patching for alignments
• Training: add MRD (Multi-Resolution STFT) discriminator, loss/MOS tracking with UTMOS, silence-trim fixes, and dataloader performance improvements
• Pass custom phoneme id map when training

1.4.2

• Fix pathvalidate dependency

1.4.1

• Add missing wheels

1.4.0

... (truncated)

Commits

• 639388b Bump version
• 46d7947 Merge pull request #293 from OHF-Voice/claude/thai-piper-training-feasibility...
• 9336d10 Fix Thai test collection aborting CI on a broken optional dependency
• fb14e09 Add Thai phonemizer (TLTK segmentation + G2P -> IPA + tone digits)
• 850c45a fix: Phase 1 relaxed poly fallback for mobile (#289)
• b275826 Add Chinese pinyin support – Phase 1 (monophonic dict fallback, honest scopin...
• 7b8e8f7 Merge pull request #275 from OHF-Voice/claude/version-1-7-0-release-2b37ec
• 222159f Silence pylint redefined-outer-name in the phonemizer tests
• af4ff76 Make the mypy exclude for vendored VITS code actually work
• c0f3289 Release 1.7.0: add --ja setup flag and test Japanese in CI
• Additional commits viewable in compare view

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