Update storybook monorepo to v7.6.4 (patch)

This MR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@storybook/addon-essentials (source)	7.6.3 -> 7.6.4
@storybook/angular (source)	7.6.3 -> 7.6.4
@storybook/blocks (source)	7.6.3 -> 7.6.4
storybook (source)	7.6.3 -> 7.6.4

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Release Notes

storybookjs/storybook (@​storybook/addon-essentials)

v7.6.4

Compare Source

• Angular: Fix CSF Plugin - #​25098, thanks @​valentinpalkovic!
• Viewport: Fix viewport dts files - #​25107, thanks @​kasperpeulen!

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