chore(deps): update golang.org/x/exp digest to 814bf88 (#982)

[![Mend
Renovate](https://app.renovatebot.com/images/banner.svg)](https://renovatebot.com)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| golang.org/x/exp | require | digest | `ec58324` -> `814bf88` |

---

### Configuration

📅 **Schedule**: Branch creation - "before 4am on Monday" (UTC),
Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you
are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

This PR has been generated by [Mend
Renovate](https://www.mend.io/free-developer-tools/renovate/). View
repository job log
[here](https://developer.mend.io/github/TBD54566975/ftl).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy4yMTIuMCIsInVwZGF0ZWRJblZlciI6IjM3LjIxMi4wIiwidGFyZ2V0QnJhbmNoIjoibWFpbiJ9-->

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

go.mod

@@ -47,7 +47,7 @@ require (
 	go.opentelemetry.io/otel/sdk/metric v1.23.1
 	go.opentelemetry.io/otel/trace v1.23.1
 	go.uber.org/automaxprocs v1.5.3
-	golang.org/x/exp v0.0.0-20240213143201-ec583247a57a
+	golang.org/x/exp v0.0.0-20240222234643-814bf88cf225
 	golang.org/x/mod v0.15.0
 	golang.org/x/net v0.21.0
 	golang.org/x/sync v0.6.0