Bump core from 0be9e8f to a5fc2ce (#1514)

Bumps [core](https://github.com/microsoft/typespec) from `0be9e8f` to
`a5fc2ce`.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/microsoft/typespec/commit/a5fc2ce6201098d1d7095bb4e7a6109c1dd2fe9a"><code>a5fc2ce</code></a>
Customization fixes (<a
href="https://redirect.github.com/microsoft/typespec/issues/4385">#4385</a>)</li>
<li><a
href="https://github.com/microsoft/typespec/commit/2010bc4490ab84a18bf3af5ab5c77863e87d9853"><code>2010bc4</code></a>
http-client-java, compiler 0.46 (<a
href="https://redirect.github.com/microsoft/typespec/issues/4393">#4393</a>)</li>
<li>See full diff in <a
href="https://github.com/microsoft/typespec/compare/0be9e8f22bb587db69bf1fc5e73effef1e2364a5...a5fc2ce6201098d1d7095bb4e7a6109c1dd2fe9a">compare
view</a></li>
</ul>
</details>
<br />


Dependabot will resolve any conflicts with this PR as long as you don't
alter it yourself. You can also trigger a rebase manually by commenting
`@dependabot rebase`.

[//]: # (dependabot-automerge-start)
[//]: # (dependabot-automerge-end)

---

<details>
<summary>Dependabot commands and options</summary>
<br />

You can trigger Dependabot actions by commenting on this PR:
- `@dependabot rebase` will rebase this PR
- `@dependabot recreate` will recreate this PR, overwriting any edits
that have been made to it
- `@dependabot merge` will merge this PR after your CI passes on it
- `@dependabot squash and merge` will squash and merge this PR after
your CI passes on it
- `@dependabot cancel merge` will cancel a previously requested merge
and block automerging
- `@dependabot reopen` will reopen this PR if it is closed
- `@dependabot close` will close this PR and stop Dependabot recreating
it. You can achieve the same result by closing it manually
- `@dependabot show <dependency name> ignore conditions` will show all
of the ignore conditions of the specified dependency
- `@dependabot ignore this major version` will close this PR and stop
Dependabot creating any more for this major version (unless you reopen
the PR or upgrade to it yourself)
- `@dependabot ignore this minor version` will close this PR and stop
Dependabot creating any more for this minor version (unless you reopen
the PR or upgrade to it yourself)
- `@dependabot ignore this dependency` will close this PR and stop
Dependabot creating any more for this dependency (unless you reopen the
PR or upgrade to it yourself)


</details>

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>