fix(deps): update dependency pptxgenjs to v4

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
pptxgenjs (source)	^3.12.0 → ^4.0.0

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Release Notes

gitbrent/PptxGenJS (pptxgenjs)

v4.0.1

Compare Source

Fixed

• Border is a string instead of a number in demo_tables.mjs #​1389 (hesi726)
• Fixed support for Scheme Colors as dataBorder #​1389 (hesi726)
• Hyperlinks cause "needs repair" when using table auto-paging #​1392 (gitbrent)

Changed

• Removed "node:fs/promises" from package.json browser field (gitbrent)
• Updated image-size to v1.2.1 #​1387 (znew711)

v4.0.0

Compare Source

Fixed

• defineSlideMaster() issues when reusing config object #​406 (ronnyroeller)
• Fixed "needs repair" issue with table auto-paging #​1380 (gitbrent)

Added

• Added textDirection property for text and table cells to allow vertical rotation of text (gitbrent)

Changed

• Bump jszip to ^3.10.1 #​1255 (NateRadebaugh)
• Added exports field to package.json to enable modern module resolution (gitbrent)
• Brand new logic for detecting Node.js (gitbrent) this fixes: Vite issues #​1325 and Web Worker issues #​1354

Deps, Demos, Tools, and Docs

• Added new vite-demo under "demos" to test using the library as a module in modern apps (replaces react-demo) (gitbrent)
• Major updates to dev dependencies (typescript, rollup, eslint, gulp) (gitbrent)
• Brand new eslint.config.js (gitbrent)
• Updated rollup.config.mjs (gitbrent)
• Brand new Vite demo replaces broken CRA react-demo (gitbrent)
• Brand new WebWorker demo (gitbrent)
• Major update to README (gitbrent)
• New TESTING.md document created, renamed RELEASES.md to RELEASING.md (gitbrent)
• Major update to browser demo page (gitbrent)
• Major update to GitHub pages doc site (gitbrent)
• Updated Data2Slides tool to modern bootstrap (gitbrent)

Removed

• Removed react-demo under demos (gitbrent)

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