Bump icu4j from 67.1 to 68.2

Bumps [icu4j](https://github.com/unicode-org/icu) from 67.1 to 68.2.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/unicode-org/icu/releases">icu4j's releases</a>.</em></p>
<blockquote>
<h2>ICU 68.2</h2>
<p>We are pleased to announce the release of Unicode® ICU 68.</p>
<p>ICU 68 updates to <a href="http://cldr.unicode.org/index/downloads/cldr-38">CLDR 38</a> locale data with many additions and corrections. ICU 68 brings major improvements and API additions for measurement unit formatting, implements locale ID canonicalization conformant with CLDR, and includes many other bug fixes and enhancements.</p>
<p>This 68.2 maintenance release adds some bug fixes from CLDR 38.1 and for some issues in the ICU code.</p>
<p>For details please see <a href="http://site.icu-project.org/download/68">http://site.icu-project.org/download/68</a></p>
<p>The API reference documents are published at the following location: <a href="https://unicode-org.github.io/icu-docs/">https://unicode-org.github.io/icu-docs/</a>
(No changes/updates for 68.2.)</p>
<p><em>Note: The prebuilt WinARM64 binaries below should be considered alpha/experimental.</em></p>
<h2>ICU 68.1</h2>
<p>We are pleased to announce the release of Unicode® ICU 68.</p>
<p>ICU 68 updates to <a href="http://cldr.unicode.org/index/downloads/cldr-38">CLDR 38</a> locale data with many additions and corrections. ICU 68 brings major improvements and API additions for measurement unit formatting, implements locale ID canonicalization conformant with CLDR, and includes many other bug fixes and enhancements.</p>
<p>For details please see <a href="http://site.icu-project.org/download/68">http://site.icu-project.org/download/68</a></p>
<p>The API reference documents will be published at the following location: <a href="https://unicode-org.github.io/icu-docs/">https://unicode-org.github.io/icu-docs/</a></p>
<p><em>Note: The prebuilt WinARM64 binaries below should be considered alpha/experimental.</em></p>
<h2>ICU 68 RC</h2>
<p>We are pleased to announce the release candidate for Unicode® ICU 68.</p>
<p>ICU 68 updates to <a href="http://cldr.unicode.org/index/downloads/cldr-38">CLDR 38</a> locale data with many additions and corrections. ICU 68 brings major improvements and API additions for measurement unit formatting, implements locale ID canonicalization conformant with CLDR, and includes many other bug fixes and enhancements.</p>
<p>For details please see <a href="http://site.icu-project.org/download/68">http://site.icu-project.org/download/68</a></p>
<p>Please test this release candidate on your platforms and report bugs and regressions by using the <a href="https://sites.google.com/site/icusite/contacts">icu-support</a> mailing list, and/or please <a href="https://sites.google.com/site/icusite/bugs">find/submit error reports</a>.</p>
<p>Please do not use this release candidate in production.</p>
<p>The release candidate API reference documents are published on <a href="https://unicode-org.github.io/icu-docs/">https://unicode-org.github.io/icu-docs/</a> – follow the “Dev” links there.</p>
<p><em>Note: The prebuilt WinARM64 binaries below should be considered alpha/experimental.</em></p>
<h2>ICU 68 Alpha</h2>
<p>We are pleased to announce the alpha release candidate for ICU 68.</p>
<p>This is an alpha release for integration testing <em>before</em> the official release candidate is published.</p>
<p>Please test this alpha release candidate on your platforms and report bugs and regressions by using the <a href="https://sites.google.com/site/icusite/contacts">icu-support</a> mailing list and/or please <a href="https://sites.google.com/site/icusite/bugs">find/submit error reports</a>.</p>
<p>Please do not use this alpha release candidate in production.</p>
<p>For more details on ICU 68, please see <a href="http://site.icu-project.org/download/68">http://site.icu-project.org/download/68</a></p>
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</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li>See full diff in <a href="https://github.com/unicode-org/icu/commits">compare view</a></li>
</ul>
</details>
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</details>

Fixes #128

COPYBARA_INTEGRATE_REVIEW=#128 from google:dependabot/maven/com.ibm.icu-icu4j-68.2 f11c3a1
PiperOrigin-RevId: 350167275

pom.xml

@@ -112,7 +112,7 @@
       <dependency>
         <groupId>com.ibm.icu</groupId>
         <artifactId>icu4j</artifactId>
-        <version>67.1</version>
+        <version>68.2</version>
       </dependency>
 
       <!-- Compile-time dependencies -->