fix(client): delete the stale packages.update exported-any-returns entry

`#12062` bound `ObjectStackClient.packages.update` to `InstalledPackage`, but its
ledger row did not come with it. The ledger is shrink-only and judged EXACTLY in
both directions, so the closed gap left `Type Check · consumer gates` red on
`main` — reproducing onto the merge ref of every open PR.

Verified against the BUILT dist before deleting: the awaited return type of
`ObjectStackClient.packages.update` is the concrete `InstalledPackage` shape,
`TypeFlags.Any = false`. The seven neighbouring `packages.*` rows still read
`any` and stay.

Part of #12180

Author: claude

packages/client/exported-any-returns.json

@@ -14,7 +14,6 @@
     "ObjectStackClient.analytics.meta": "#12104 — no return annotation; `return res.json()`, and lib.dom declares `Response.json(): Promise<any>`. Invisible to every grep #8140's census and #11925 used: the method names neither `any` nor `Promise` nor `unwrapResponse`. Bind the contract the route actually answers, minding the envelope.",
     "ObjectStackClient.analytics.explain": "#12104 — no return annotation; `return res.json()`, and lib.dom declares `Response.json(): Promise<any>`. Invisible to every grep #8140's census and #11925 used: the method names neither `any` nor `Promise` nor `unwrapResponse`. Bind the contract the route actually answers, minding the envelope.",
     "ObjectStackClient.analytics.queryDataset": "#12104 — no return annotation; `return res.json()`, and lib.dom declares `Response.json(): Promise<any>`. Invisible to every grep #8140's census and #11925 used: the method names neither `any` nor `Promise` nor `unwrapResponse`. Bind the contract the route actually answers, minding the envelope.",
-    "ObjectStackClient.packages.update": "#11925 — no return annotation; the published type comes from `this.unwrapResponse<any>(res)`. Invisible to a `Promise<` grep because the text never appears in the method. Bind the contract the route actually answers, minding the envelope.",
     "ObjectStackClient.packages.publish": "#11925 — no return annotation; the published type comes from `this.unwrapResponse<any>(res)`. Invisible to a `Promise<` grep because the text never appears in the method. Bind the contract the route actually answers, minding the envelope.",
     "ObjectStackClient.packages.discardDrafts": "#11925 — no return annotation; the published type comes from `this.unwrapResponse<any>(res)`. Invisible to a `Promise<` grep because the text never appears in the method. Bind the contract the route actually answers, minding the envelope.",
     "ObjectStackClient.packages.revertCommit": "#11925 — no return annotation; the published type comes from `this.unwrapResponse<any>(res)`. Invisible to a `Promise<` grep because the text never appears in the method. Bind the contract the route actually answers, minding the envelope.",