[C++] Update bundled RE2
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Component: C++
Type: enhancement
- Dominant language
- C++
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Description
### Describe the enhancement requested
We're using 2023-03-01 because of GH-48010:
https://github.com/apache/arrow/blob/ee0d861d2bf342272920ae7213b594a18154f7bf/cpp/thirdparty/versions.txt#L100-L104
Can we upgrade to the latest re2 now? (Can we use Abseil on CRAN now?)
### Component(s)
C++
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