[infra] Upgrade (almost) all dependencies (#3136)

- Upgrades almost all dependencies, both dev and prod.

- There were only 2 deps I didn't tackle in this PR, because it seems like they'll need a little more work:
    - parse5 6 -> 7 (cc @43081j, seems like the types API is substantially different now, so I wasn't able to easily do this upgrade).
    - react 17 -> 18 (cc @justinfagnani @taylor-vann I wasn't sure what the implications/requirements for upgrading to react 18 will be, so I didn't even try).

- Consolidated some very common devDeps (e.g. uvu, mocha) into the top-level package.json, for easier future upgrade.

- Removes some unnecessary dependencies I found.

- Updates a few spots where typings changed.

- Removes 350MB (1.6GB -> 1.25GB) and 999 packages (3122 -> 2123), from our install.

- FYI these external PRs were also needed to get things fully upgraded:
  - kenchris/urlpattern-polyfill#101
  - google/tachometer#239

.changeset/lemon-pens-move.md

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+---
+'@lit/localize-tools': patch
+---
+
+Updated xmldom dependency. Minor change to XML attribute formatting can be expected.

.changeset/purple-teachers-doubt.md

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+---
+'@lit/ts-transformers': patch
+---
+
+Upgrade ts-clone-node dependency

.changeset/seven-roses-serve.md

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+---
+'@lit-labs/virtualizer': patch
+---
+
+Upgrade tslib version

.changeset/silly-kings-relax.md

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+---
+'@lit-labs/ssr': patch
+---
+
+Upgrade node-fetch version

.changeset/tricky-schools-impress.md

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+---
+'@lit-labs/virtualizer': patch
+---
+
+Upgrade event-target-shim