chore: Bump github.com/andybalholm/brotli from 1.2.0 to 1.2.1 (#753)

Bumps
[github.com/andybalholm/brotli](https://github.com/andybalholm/brotli)
from 1.2.0 to 1.2.1.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/andybalholm/brotli/commit/0675b242cf45dcdd51ed6fb600876b570bea329b"><code>0675b24</code></a>
Remove unnecessary nil checks</li>
<li><a
href="https://github.com/andybalholm/brotli/commit/946c3e4071198a86d6c037ffcd138968dd4fc68e"><code>946c3e4</code></a>
matchfinder: verify candidate matches against source data</li>
<li><a
href="https://github.com/andybalholm/brotli/commit/014fb9c9e8f7e87e7996309844260b1f8d890528"><code>014fb9c</code></a>
Add Bargain3 MatchFinder</li>
<li><a
href="https://github.com/andybalholm/brotli/commit/deb905c53b5bcb9fa2d20ccb66890fa941c883cf"><code>deb905c</code></a>
Trio: vary hash table sizes</li>
<li><a
href="https://github.com/andybalholm/brotli/commit/b84bddd64ee4c9ca21b98009bc212e14fd7b5bd4"><code>b84bddd</code></a>
M4: fix updating chain for long history</li>
<li><a
href="https://github.com/andybalholm/brotli/commit/a7ad41202f4421be4299ea5c911b41396c6170bf"><code>a7ad412</code></a>
Bargain1 &amp; Bargain2: check for matches less often</li>
<li><a
href="https://github.com/andybalholm/brotli/commit/6c6ca8c2a86a6448ef2b7986e6c8ecf5e8a9e29c"><code>6c6ca8c</code></a>
Add Bargain1 MatchFinder</li>
<li><a
href="https://github.com/andybalholm/brotli/commit/01c485509d026342053502adc6c3b692dcbf2003"><code>01c4855</code></a>
Add Bargain2 MatchFinder</li>
<li><a
href="https://github.com/andybalholm/brotli/commit/b70ce549fa67fc350e2051de343a06d00e16a264"><code>b70ce54</code></a>
Add HTTPCompressorWithLevel</li>
<li><a
href="https://github.com/andybalholm/brotli/commit/f8935d5c2aed358527994b3f3c16c3229f228c70"><code>f8935d5</code></a>
Add a flate encoder using the matchfinder package.</li>
<li>Additional commits viewable in <a
href="https://github.com/andybalholm/brotli/compare/v1.2.0...v1.2.1">compare
view</a></li>
</ul>
</details>
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go.mod

@@ -19,7 +19,7 @@ module github.com/apache/arrow-go/v18
 go 1.25.0
 
 require (
-	github.com/andybalholm/brotli v1.2.0
+	github.com/andybalholm/brotli v1.2.1
 	github.com/apache/thrift v0.22.0
 	github.com/cespare/xxhash/v2 v2.3.0
 	github.com/docopt/docopt-go v0.0.0-20180111231733-ee0de3bc6815

go.sum

@@ -17,8 +17,8 @@ github.com/MarvinJWendt/testza v0.3.0/go.mod h1:eFcL4I0idjtIx8P9C6KkAuLgATNKpX4/
 github.com/MarvinJWendt/testza v0.4.2/go.mod h1:mSdhXiKH8sg/gQehJ63bINcCKp7RtYewEjXsvsVUPbE=
 github.com/MarvinJWendt/testza v0.5.2 h1:53KDo64C1z/h/d/stCYCPY69bt/OSwjq5KpFNwi+zB4=
 github.com/MarvinJWendt/testza v0.5.2/go.mod h1:xu53QFE5sCdjtMCKk8YMQ2MnymimEctc4n3EjyIYvEY=
-github.com/andybalholm/brotli v1.2.0 h1:ukwgCxwYrmACq68yiUqwIWnGY0cTPox/M94sVwToPjQ=
-github.com/andybalholm/brotli v1.2.0/go.mod h1:rzTDkvFWvIrjDXZHkuS16NPggd91W3kUSvPlQ1pLaKY=
+github.com/andybalholm/brotli v1.2.1 h1:R+f5xP285VArJDRgowrfb9DqL18yVK0gKAW/F+eTWro=
+github.com/andybalholm/brotli v1.2.1/go.mod h1:rzTDkvFWvIrjDXZHkuS16NPggd91W3kUSvPlQ1pLaKY=
 github.com/antlr4-go/antlr/v4 v4.13.1 h1:SqQKkuVZ+zWkMMNkjy5FZe5mr5WURWnlpmOuzYWrPrQ=
 github.com/antlr4-go/antlr/v4 v4.13.1/go.mod h1:GKmUxMtwp6ZgGwZSva4eWPC5mS6vUAmOABFgjdkM7Nw=
 github.com/apache/thrift v0.22.0 h1:r7mTJdj51TMDe6RtcmNdQxgn9XcyfGDOzegMDRg47uc=