Update devDependencies

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@oddbird/popover-polyfill	0.3.2 -> 0.3.6
postcss (source)	8.4.31 -> 8.4.32

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Release Notes

oddbird/popover-polyfill (@​oddbird/popover-polyfill)

v0.3.6

Compare Source

• 🐛 BUGFIX: Allow Esc to be preventable --
  #​158
• 📝 DOCS: Add caveat about :host styles --
  #​157

v0.3.5

Compare Source

• 🐛 BUGFIX: Fix incorrect isFocusable result for ShadowRoot --
  #​155
• 🚀 NEW: Prepend default styles to lower specificity in the cascade --
  #​156

v0.3.4

Compare Source

• 🚀 NEW: Wrap styles in :where() to lower specificity in the cascade --
  #​153

v0.3.3

Compare Source

• 🐛 BUGFIX: Check slotted content for autofocus delegate --
  #​150
• 🏠 INTERNAL: Upgrade dependencies

postcss/postcss (postcss)

v8.4.32

Compare Source

• Fixed postcss().process() types (by Andrew Ferreira).

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