chore(deps): bump com.ibm.icu:icu4j from 78.1 to 78.2 in /r5

[dependabot]

Bumps com.ibm.icu:icu4j from 78.1 to 78.2.

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Sourced from com.ibm.icu:icu4j's releases.

ICU 78.2

We are pleased to announce the release of Unicode® ICU 78.2. It updates to CLDR 48.1. These are maintenance releases for ICU 78 and CLDR 48, with limited sets of bug fixes and no API or structural changes.

ICU 78.2 also includes a small number of bug fixes, as well as a minor update for time zone data (tzdata) version 2025c (2025-dec) ICU-23296.

• List of tickets fixed in ICU 78.2

Changes in ICU 78.2:

• C++ ucasemap_setLocale() better handles errors in reading uninitialized memory from a bogus locale ID
• Java & C++ yield the correct long time zone name for Europe/Dublin
• C++ fixes a build issue on the clang-cl compiler related to the 'dllexport' attribute
• C++ fixes a build issue when operator+ on UnicodeString is used with non-ICU code when ICU headers are included
• List of all tickets fixed in ICU 78.2

For details, please see https://unicode-org.github.io/icu/download/78.html.

Commits

• f1b3db8 ICU-23290 Integrate CLDR 48.1 final1 to ICU maint-78, no data changes
• 7c0aebc ICU-23290 Integrate CLDR 48.1 beta1 to ICU maint-78, part 3: ICU code/test/to...
• e578afb ICU-23290 Integrate CLDR 48.1 beta1 to ICU maint-78, part 2: source data/test...
• 277ba9e ICU-23290 Integrate CLDR 48.1 beta1 to ICU maint-78, part 1: binary data gene...
• b66f1df ICU-23299 wstring woes
• 60c467f ICU-23296 Update time zone data to 2025c
• 6bd4f09 ICU-23290 BRS_78_2_GA Update version number to 78.2 (no SNAPSHOT / rc)
• 815e191 ICU-23293 Remove attribute 'dllexport' from deleted functions.
• 019c72b ICU-23278 Fix ldml2icu metazones
• 0dd8ee9 ICU-23252 Fix int overflow in messagepattern.cpp
• Additional commits viewable in compare view

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Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ +0.00% (target: -1.00%)	✅ ∅

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (81913f3)	1592	1592	100.00%
Head commit (83a16e0)	3184 (+1592)	3184 (+1592)	100.00% (+0.00%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#314)	0	0	∅ (not applicable)

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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