chore(deps): update dependency @web/test-runner-puppeteer to v0.18.0 #3991

Job	Run time
Verify changes (lit-element)	1m 17s
Verify changes (lit-element-ts-esbuild)	44s
Verify changes (lit-element-ts-tsc)	1m 31s
Verify changes (html-test)	52s
Verify changes (preact-htm)	1m 54s
Verify changes (preact-jsx)	1m 8s
Verify changes (preact-tsx)	1m 54s
Verify changes (puppeteer)	1m 40s
Verify changes (playwright)	50s
Verify changes (import-maps)	35s
Verify changes (mock-es-module)	40s
Verify changes (visual-regression)	45s
Verify changes (saucelabs)	1m 35s
Verify changes (guides/test-runner/getting-started)	53s
Verify changes (guides/test-runner/watch-and-debug)	34s
Verify changes (guides/test-runner/playwright)	1m 21s
Verify changes (guides/test-runner/responsive)	59s
Verify changes (guides/test-runner/typescript)	36s
Verify changes (react-htm)	1m 23s
Verify changes (react-jsx)	1m 32s
Verify changes (react-tsx)	1m 9s
Verify changes (snowpack-lit)	1m 11s
Verify changes (snowpack-react)	1m 31s
Verify changes (snowpack-svelte)	1m 25s
	27m 59s

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