(spark) branch master updated (c6aaa18e6cfd -> b4624bf4be28)

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    from c6aaa18e6cfd Revert "[SPARK-45302][PYTHON] Remove PID communication between Pythonworkers when no demon is used"
     add b4624bf4be28 [SPARK-47414][SQL] Lowercase collation support for regexp expressions

No new revisions were added by this update.

Summary of changes:
 .../spark/sql/catalyst/util/CollationSupport.java  |  21 +-
 .../sql/catalyst/analysis/CollationTypeCasts.scala |   7 +-
 .../catalyst/expressions/regexpExpressions.scala   |  92 ++++---
 .../CollationRegexpExpressionsSuite.scala          | 170 ++++++++++++
 ...nsSuite.scala => CollationSQLRegexpSuite.scala} | 292 ++++++++++++++-------
 5 files changed, 456 insertions(+), 126 deletions(-)
 create mode 100644 sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/CollationRegexpExpressionsSuite.scala
 rename sql/core/src/test/scala/org/apache/spark/sql/{CollationRegexpExpressionsSuite.scala => CollationSQLRegexpSuite.scala} (50%)


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