Bump submodules/openssl from `b4d3f92` to `af76e77` (#5606)

Bumps [submodules/openssl](https://github.com/openssl/openssl) from
`b4d3f92` to `af76e77`.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/openssl/openssl/commit/af76e77ccb3e220c53463a59320ef333469106b7"><code>af76e77</code></a>
doc: Add HISTORY entry for message signing functions in
provider-signature(7)</li>
<li><a
href="https://github.com/openssl/openssl/commit/b5502ad75c2c5da0813a366f95c29a6654095b88"><code>b5502ad</code></a>
bio_ok.c: Fixed undefined identifier 'SIZE_MAX'</li>
<li><a
href="https://github.com/openssl/openssl/commit/967f42e8488502755e5718a86b0a04202dd1f88a"><code>967f42e</code></a>
CMP doc: update RFC 4210 -&gt; 9810, RFC 6712 -&gt; 9811</li>
<li><a
href="https://github.com/openssl/openssl/commit/3b40f4a484e736e8da4e27f781d7e00ff811eea3"><code>3b40f4a</code></a>
Prevent NULL deref in BN_is_zero when cofactor is missing</li>
<li><a
href="https://github.com/openssl/openssl/commit/a57ff2380480c85210329f0e2a16fd5380b6114d"><code>a57ff23</code></a>
asn1_gen: add ASN1_object_size() return check and fix else braces</li>
<li><a
href="https://github.com/openssl/openssl/commit/7e805d9b56ec5f6763c794426cdc3965aad333b2"><code>7e805d9</code></a>
CRYPTO_R_ cannot be used with ERR_LIB_OSSL_STORE</li>
<li><a
href="https://github.com/openssl/openssl/commit/e87c892baef1f38f05879a14185e9e65accee261"><code>e87c892</code></a>
apps/s_socket: fix FD and addrinfo leak on SCTP failure in
init_client</li>
<li><a
href="https://github.com/openssl/openssl/commit/7a1f07d8e9fc1689ce5f52da407d1575a45967a8"><code>7a1f07d</code></a>
crypto/bio/bss_acpt: set b-&gt;init only on successful
BIO_parse_hostserv</li>
<li><a
href="https://github.com/openssl/openssl/commit/3a879b4117214dabc54430644044636686b775c6"><code>3a879b4</code></a>
quic/quic_demux: Mirror int overflow check from demux_alloc_urxe into
demux_r...</li>
<li><a
href="https://github.com/openssl/openssl/commit/095cdb23bd5ca21f5a78cc1b5ab5589231b60104"><code>095cdb2</code></a>
Rollup fixes for NonStop builds.</li>
<li>See full diff in <a
href="https://github.com/openssl/openssl/compare/b4d3f92cce39027d26df8d5d25cddb9c2f27133c...af76e77ccb3e220c53463a59320ef333469106b7">compare
view</a></li>
</ul>
</details>
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diff --git a/submodules/openssl b/submodules/openssl
index b4d3f92cce39027d26df8d5d25cddb9c2f27133c..af76e77ccb3e220c53463a59320ef333469106b7 160000 (submodule)
--- a/submodules/openssl
+++ b/submodules/openssl
@@ -1 +1 @@
-Subproject commit b4d3f92cce39027d26df8d5d25cddb9c2f27133c
+Subproject commit af76e77ccb3e220c53463a59320ef333469106b7