Remove devDep '@atproto/bsky' from pds

[trivikr]

Fixes: https://github.com/bluesky-social/atproto/issues/3009

Before

$ make deps 
pnpm install --frozen-lockfile
Scope: all 43 workspace projects
 WARN  There are cyclic workspace dependencies: /Users/trivikram/workspace/atproto/packages/bsky, /Users/trivikram/workspace/atproto/packages/pds
Lockfile is up to date, resolution step is skipped
...

After

$ make deps
pnpm install --frozen-lockfile
Scope: all 43 workspace projects
Lockfile is up to date, resolution step is skipped
...