feat(web): update rollup-plugin-typescript2 to 0.31

[jaysoo]

This update gets rid of warnings in Node 16. See ezolenko/rollup-plugin-typescript2#267

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✅ Successfully ran 6 targets

• nx affected --target=build --base=195b8f32620ecb2f5c503b7ce3f13703c36f91b3 --head=68e9674623088e29123e9b93f0ceea402e50656e --parallel --max-parallel=3
• nx affected --target=e2e --base=195b8f32620ecb2f5c503b7ce3f13703c36f91b3 --head=68e9674623088e29123e9b93f0ceea402e50656e --exclude=e2e-detox,e2e-js,e2e-next,e2e-gatsby,e2e-workspace-create,e2e-workspace-integrations,e2e-workspace-core,e2e-react,e2e-web,e2e-angular-extensions,e2e-angular-core,e2e-cli,e2e-nx-plugin,e2e-storybook,e2e-cypress,e2e-node,...
• nx affected --target=e2e --base=195b8f32620ecb2f5c503b7ce3f13703c36f91b3 --head=68e9674623088e29123e9b93f0ceea402e50656e --exclude=e2e-react-native,e2e-detox,e2e-gatsby --parallel=1
• nx affected --target=test --base=195b8f32620ecb2f5c503b7ce3f13703c36f91b3 --head=68e9674623088e29123e9b93f0ceea402e50656e --parallel --max-parallel=3
• nx build typedoc-theme
• nx run-many --target=build --all --parallel=8

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