migrate to pnpm (#609)

* migrate to `pnpm`

* rename `simple-project` fixture packages to remove socket security errors

* add pnpm `dedupe` options

* update release-pr workflow

* update

* update snashots

* tweaks

* tweak

* tweak

* fix missing ci-setup

* tweak

* tweak deps

* update pnpm

* ok, Socket, let's rename them

* update snapshots

* rename again

* fmt

---------

Co-authored-by: Mateusz Burzyński <mateuszburzynski@gmail.com>

pnpm-workspace.yaml

@@ -0,0 +1,8 @@
+allowBuilds:
+  esbuild: true
+
+blockExoticSubdeps: true
+dedupePeers: true
+dedupePeerDependents: true
+minimumReleaseAge: 10080
+trustPolicy: no-downgrade