fix(deps): Update unocss requirement from ^0.60.0 to ^0.60.3 in /example

[dependabot]

Updates the requirements on unocss to permit the latest version.

Release notes

Sourced from unocss's releases.

v0.60.3

   🚀 Features

• preset-mini: text-align utility  -  by @​UltraCakeBakery, Chris and @​antfu in unocss/unocss#3796 (5f2a8)
• transformer-directives: Add removeComments  -  by @​Simon-He95 and @​antfu in unocss/unocss#3799 (a9ab8)

   🐞 Bug Fixes

• Enable regex eslint rule, optimize regexes  -  by @​antfu in unocss/unocss#3801 (882cc)
• cli: Extractors not working  -  by @​Simon-He95 in unocss/unocss#3803 (398c1)
• preset-mini: DirectionSize size cause error when size is undefined  -  by @​Simon-He95 in unocss/unocss#3809 (c19ab)
• shared-integration: GetCssEscaperForJsContent replace conflict  -  by @​Simon-He95 in unocss/unocss#3797 (dd013)
• transformers: Try improve hmr in vite  -  by @​Simon-He95 and @​antfu in unocss/unocss#3741 (22ff2)
• vite: Warn when unocss:global:build:bundle has no CSS placeholder  -  by @​Simon-He95 in unocss/unocss#3802 (210a2)

   🏎 Performance

• preset-mini: Improve performance of resolveBreakpoints  -  by @​antfu (05d90)

    View changes on GitHub

Commits

• 2ab9e6f chore: release v0.60.3
• 89afdff docs: include unocss package in postcss installation command (#3818)
• 5f2a899 feat(preset-mini): text-align utility (#3796)
• a9ab869 feat(transformer-directives): add removeComments (#3799)
• 37de8e6 chore: lint
• 624f29c chore: update deps
• 210a22b fix(vite): warn when unocss:global:build:bundle has no CSS placeholder (#3802)
• 882cc69 fix: enable regex eslint rule, optimize regexes (#3801)
• c19ab68 fix(preset-mini): directionSize size cause error when size is undefined (#3809)
• 398c15a fix(cli): extractors not working (#3803)
• Additional commits viewable in compare view

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[dependabot]

Superseded by #2113.