chore(deps): update dependency ttypescript to v1.5.15

This MR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
ttypescript (source)	1.5.13 -> 1.5.15

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Release Notes

cevek/ttypescript

v1.5.15: Add support typescript 4.9

Compare Source

What's Changed

• Bug fix for "Expression produces a union type that is too complex to represent" error by @​mdmitry01 in https://github.com/cevek/ttypescript/pull/112
• docs: feature tsc-progress by @​JiangWeixian in https://github.com/cevek/ttypescript/pull/126
• Standardize spacing between curly braces on docs by @​henriquehbr in https://github.com/cevek/ttypescript/pull/109
• Fix #​134 - support TS 4.9 by @​samchon in https://github.com/cevek/ttypescript/pull/135

New Contributors

• @​mdmitry01 made their first contribution in https://github.com/cevek/ttypescript/pull/112
• @​JiangWeixian made their first contribution in https://github.com/cevek/ttypescript/pull/126
• @​henriquehbr made their first contribution in https://github.com/cevek/ttypescript/pull/109
• @​samchon made their first contribution in https://github.com/cevek/ttypescript/pull/135

Full Changelog: https://github.com/cevek/ttypescript/compare/1.5.12...1.5.14

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