Bump ts-morph from 7.3.0 to 9.1.0

[dependabot-preview]

Bumps ts-morph from 7.3.0 to 9.1.0.

Commits

• cc3be50 chore(release): 9.1.0
• 960d672 docs: #888 - Add example for Type#getTargetType()
• df43d12 feat: Support providing file paths to getRelativePathTo and `getRelativePat...
• bef39b8 feat: Add Directory#getProject()
• 218d205 chore: Format.
• 62b0890 chore: Internally use ts-morph 9.0.
• 1ce7a67 chore(release): 9.0.0
• 8227910 chore: Replace fs-extra dependency with more specialized mkdirp.
• 646f797 perf(bootstrap): Implement using getProjectVersion() in @ts-morph/bootstrap.
• 7c524ec chore: Fix compile errors.
• Additional commits viewable in compare view

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[dependabot-preview]

Superseded by #488.