Bump the prod-dependencies group with 2 updates (#1356)

Bumps the prod-dependencies group with 2 updates:
[@antora/cli](https://gitlab.com/antora/antora) and
[@antora/site-generator-default](https://gitlab.com/antora/antora).

Updates `@antora/cli` from 3.1.10 to 3.1.12
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://gitlab.com/antora/antora/commit/0fd8b9c95523dbc3cf94e87ce3ff277023d72d8b"><code>0fd8b9c</code></a>
release 3.1.12</li>
<li><a
href="https://gitlab.com/antora/antora/commit/e413f5003a562669ef782c4b68670314006749d4"><code>e413f50</code></a>
update what's new for upcoming 3.1.12 release</li>
<li><a
href="https://gitlab.com/antora/antora/commit/02d1fc252f73e9cc60fdca96edda424cd2dfdb9f"><code>02d1fc2</code></a>
populate what's new page for upcoming 3.1.11 release [skip ci]</li>
<li><a
href="https://gitlab.com/antora/antora/commit/b03494613099e19ee9fbb5a63d6344c966a9618a"><code>b034946</code></a>
refresh dependency lock file</li>
<li><a
href="https://gitlab.com/antora/antora/commit/418f9c0136bb4389ecbcf6f1e551e8b47b7e534b"><code>418f9c0</code></a>
backport fix for <a
href="https://gitlab.com/antora/antora/issues/1179">#1179</a> skip check
for remote branches in non-managed reposito...</li>
<li><a
href="https://gitlab.com/antora/antora/commit/93a17198a3788252f4bd65094410bf05d67c6305"><code>93a1719</code></a>
remove unused remoteName parameter in selectStartPaths function</li>
<li><a
href="https://gitlab.com/antora/antora/commit/1475f94a3bc1a282461031a9920ab1580dc9e0c5"><code>1475f94</code></a>
move credential URLs to separate section on private repository auth
page</li>
<li><a
href="https://gitlab.com/antora/antora/commit/ea029092153182ed29820fe1bad039e32bf7ebd0"><code>ea02909</code></a>
clarify that credentials entry with repository path takes
precedence</li>
<li><a
href="https://gitlab.com/antora/antora/commit/db945677e6796872ccaf566bf5a9cb83b1b1bb1d"><code>db94567</code></a>
show full code for system git credential manager to make it easier to
copy; s...</li>
<li><a
href="https://gitlab.com/antora/antora/commit/c865d4e02e91bc5d168d0a260ad5a61fafefc8de"><code>c865d4e</code></a>
clarify that the require helper has a fallback</li>
<li>Additional commits viewable in <a
href="https://gitlab.com/antora/antora/compare/v3.1.10...v3.1.12">compare
view</a></li>
</ul>
</details>
<br />

Updates `@antora/site-generator-default` from 3.1.10 to 3.1.12
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://gitlab.com/antora/antora/commit/0fd8b9c95523dbc3cf94e87ce3ff277023d72d8b"><code>0fd8b9c</code></a>
release 3.1.12</li>
<li><a
href="https://gitlab.com/antora/antora/commit/e413f5003a562669ef782c4b68670314006749d4"><code>e413f50</code></a>
update what's new for upcoming 3.1.12 release</li>
<li><a
href="https://gitlab.com/antora/antora/commit/02d1fc252f73e9cc60fdca96edda424cd2dfdb9f"><code>02d1fc2</code></a>
populate what's new page for upcoming 3.1.11 release [skip ci]</li>
<li><a
href="https://gitlab.com/antora/antora/commit/b03494613099e19ee9fbb5a63d6344c966a9618a"><code>b034946</code></a>
refresh dependency lock file</li>
<li><a
href="https://gitlab.com/antora/antora/commit/418f9c0136bb4389ecbcf6f1e551e8b47b7e534b"><code>418f9c0</code></a>
backport fix for <a
href="https://gitlab.com/antora/antora/issues/1179">#1179</a> skip check
for remote branches in non-managed reposito...</li>
<li><a
href="https://gitlab.com/antora/antora/commit/93a17198a3788252f4bd65094410bf05d67c6305"><code>93a1719</code></a>
remove unused remoteName parameter in selectStartPaths function</li>
<li><a
href="https://gitlab.com/antora/antora/commit/1475f94a3bc1a282461031a9920ab1580dc9e0c5"><code>1475f94</code></a>
move credential URLs to separate section on private repository auth
page</li>
<li><a
href="https://gitlab.com/antora/antora/commit/ea029092153182ed29820fe1bad039e32bf7ebd0"><code>ea02909</code></a>
clarify that credentials entry with repository path takes
precedence</li>
<li><a
href="https://gitlab.com/antora/antora/commit/db945677e6796872ccaf566bf5a9cb83b1b1bb1d"><code>db94567</code></a>
show full code for system git credential manager to make it easier to
copy; s...</li>
<li><a
href="https://gitlab.com/antora/antora/commit/c865d4e02e91bc5d168d0a260ad5a61fafefc8de"><code>c865d4e</code></a>
clarify that the require helper has a fallback</li>
<li>Additional commits viewable in <a
href="https://gitlab.com/antora/antora/compare/v3.1.10...v3.1.12">compare
view</a></li>
</ul>
</details>
<br />


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Author: dependabot[bot]