build(deps): Bump github.com/attestantio/go-eth2-client from 0.21.7 t…

…o 0.21.8 (#3195)

Bumps [github.com/attestantio/go-eth2-client](https://github.com/attestantio/go-eth2-client) from 0.21.7 to 0.21.8.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/attestantio/go-eth2-client/blob/master/CHANGELOG.md">github.com/attestantio/go-eth2-client's changelog</a>.</em></p>
<blockquote>
<p>0.21.8:</p>
<ul>
<li>remove Lodestar proposals workaround</li>
<li>add client headers for events stream</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/attestantio/go-eth2-client/commit/166b693bcdeeb23b011ff72019380a8d9384e673"><code>166b693</code></a> Release 0.21.8</li>
<li><a href="https://github.com/attestantio/go-eth2-client/commit/eff49f75adb20c6263fd8e5cde0adb7963979d2e"><code>eff49f7</code></a> Use xxxxx rather than *** to mask sensitive data in URLs.</li>
<li><a href="https://github.com/attestantio/go-eth2-client/commit/73945bae38219dc69d6fea5e35327830e4f20e8e"><code>73945ba</code></a> Set appropriate Accept header for events.</li>
<li><a href="https://github.com/attestantio/go-eth2-client/commit/013813261d14229b6e88fececcdf0543ac84a1bd"><code>0138132</code></a> Add client headers for events stream.</li>
<li><a href="https://github.com/attestantio/go-eth2-client/commit/5f15ea2fead860462ef760fdc26a3ed6a43c7980"><code>5f15ea2</code></a> Remove unused code.</li>
<li><a href="https://github.com/attestantio/go-eth2-client/commit/a947dedb02165af33fec740bf20209927d0ee82d"><code>a947ded</code></a> Merge pull request <a href="https://redirect.github.com/attestantio/go-eth2-client/issues/148">#148</a> from nflaig/patch-1</li>
<li><a href="https://github.com/attestantio/go-eth2-client/commit/03cad5aa68dcde54c4d8af0e4e8907e5f53b4e0f"><code>03cad5a</code></a> Remove workaround for Lodestar when submitting proposal</li>
<li>See full diff in <a href="https://github.com/attestantio/go-eth2-client/compare/v0.21.7...v0.21.8">compare view</a></li>
</ul>
</details>
<br />


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</details>

go.mod

@@ -3,7 +3,7 @@ module github.com/obolnetwork/charon
 go 1.22
 
 require (
-	github.com/attestantio/go-eth2-client v0.21.7
+	github.com/attestantio/go-eth2-client v0.21.8
 	github.com/bufbuild/buf v1.35.0
 	github.com/coinbase/kryptology v1.5.6-0.20220316191335-269410e1b06b
 	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.3.0

go.sum

@@ -29,8 +29,8 @@ github.com/ObolNetwork/kryptology v0.0.0-20231016091344-eed023b6cac8/go.mod h1:q
 github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239/go.mod h1:2FmKhYUyUczH0OGQWaF5ceTx0UBShxjsH6f8oGKYe2c=
 github.com/antlr4-go/antlr/v4 v4.13.0 h1:lxCg3LAv+EUK6t1i0y1V6/SLeUi0eKEKdhQAlS8TVTI=
 github.com/antlr4-go/antlr/v4 v4.13.0/go.mod h1:pfChB/xh/Unjila75QW7+VU4TSnWnnk9UTnmpPaOR2g=
-github.com/attestantio/go-eth2-client v0.21.7 h1:tdTJWiOJUCDmYSDt5C8D8+N5Hxfos0yLp+iVT7tKWMk=
-github.com/attestantio/go-eth2-client v0.21.7/go.mod h1:d7ZPNrMX8jLfIgML5u7QZxFo2AukLM+5m08iMaLdqb8=
+github.com/attestantio/go-eth2-client v0.21.8 h1:n9MUWxP89wAXEXeGyiGVZagG/wT6UhR3bRSJLQ5Vr2c=
+github.com/attestantio/go-eth2-client v0.21.8/go.mod h1:d7ZPNrMX8jLfIgML5u7QZxFo2AukLM+5m08iMaLdqb8=
 github.com/benbjohnson/clock v1.1.0/go.mod h1:J11/hYXuz8f4ySSvYwY0FKfm+ezbsZBKZxNJlLklBHA=
 github.com/benbjohnson/clock v1.3.0/go.mod h1:J11/hYXuz8f4ySSvYwY0FKfm+ezbsZBKZxNJlLklBHA=
 github.com/benbjohnson/clock v1.3.5 h1:VvXlSJBzZpA/zum6Sj74hxwYI2DIxRWuNIoXAzHZz5o=