fix: update dependency @lit-labs/observers to v2.0.6

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@lit-labs/observers (source)	2.0.2 -> 2.0.6

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Release Notes

lit/lit (@​lit-labs/observers)

v2.0.6

Compare Source

Patch Changes

• #​4997 aea85e24 - Update README

v2.0.5

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Patch Changes

• #​4903 6a232e92 - Add Lit Labs noticed to README

• #​4914 ee153ce5 - Fix typo in README.md

v2.0.4

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Patch Changes

• #​4782 99703a03 - Revert the Terser plugin for Rollup to rollup-plugin-terser from @rollup/plugin-terser
  due to a bug that prevented our minified name prefixing from working.

v2.0.3

Compare Source

Patch Changes

• #​4591 045b6f15 Thanks @​a11delavar! - Do not initialize observers to prevent failing in SSR environment.

• Updated dependencies [feccc1ba]:

  • [email protected]

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