Bump pyarrow from 0.12.1 to 0.15.1 in /scripts/DevWorkshop/GoogleCloudPlatform/moreExamples

[dependabot[bot]]

Bumps pyarrow from 0.12.1 to 0.15.1.

Changelog

Sourced from pyarrow's changelog.

Apache Arrow 0.15.1 (25 October 2019)

Bug

• ARROW-6464 - [Java] Refactor FixedSizeListVector#splitAndTransfer with slice API
• ARROW-6728 - [C#] Support reading and writing Date32 and Date64 arrays
• ARROW-6740 - [Python] Unable to delete closed MemoryMappedFile on Windows
• ARROW-6762 - [C++] JSON reader segfaults on newline
• ARROW-6795 - [C#] Reading large Arrow files in C# results in an exception
• ARROW-6806 - [C++] Segfault deserializing ListArray containing null/empty list
• ARROW-6813 - [Ruby] Arrow::Table.load with headers=true leads to exception in Arrow 0.15
• ARROW-6834 - [C++] Pin gtest to 1.8.1 to triage failing Appveyor / MSVC build
• ARROW-6844 - [C++][Parquet][Python] List columns read broken with 0.15.0
• ARROW-6857 - [Python][C++] Segfault for dictionary_encode on empty chunked_array (edge case)
• ARROW-6860 - [Python] Only link libarrow_flight.so to pyarrow._flight
• ARROW-6861 - [Python] arrow-0.15.0 reading arrow-0.14.1-output Parquet dictionary column: Failure reading column: IOError: Arrow error: Invalid: Resize cannot downsize
• ARROW-6869 - [C++] Dictionary "delta" building logic in builder_dict.h produces invalid arrays
• ARROW-6873 - [Python] Stale CColumn reference break Cython cimport pyarrow
• ARROW-6874 - [Python] Memory leak in Table.to_pandas() when conversion to object dtype
• ARROW-6876 - [Python] Reading parquet file with many columns becomes slow for 0.15.0
• ARROW-6877 - [C++] Boost not found from the correct environment
• ARROW-6878 - [Python] pa.array() does not handle list of dicts with bytes keys correctly under python3
• ARROW-6882 - [Python] cannot create a chunked_array from dictionary_encoding result
• ARROW-6886 - [C++] arrow::io header nvcc compiler warnings
• ARROW-6898 - [Java] Fix potential memory leak in ArrowWriter and several test classes
• ARROW-6903 - [Python] Wheels broken after ARROW-6860 changes
• ARROW-6905 - [Packaging][OSX] Nightly builds on MacOS are failing because of brew compile timeouts
• ARROW-6910 - [Python] pyarrow.parquet.read_table(...) takes up lots of memory which is not released until program exits
• ARROW-6922 - [Python] Pandas master build is failing (MultiIndex.levels change)
• ARROW-6937 - [Packaging][Python] Fix conda linux and OSX wheel nightly builds
• ARROW-6938 - [Python] Windows wheel depends on zstd.dll and libbz2.dll, which are not bundled
• ARROW-6962 - [C++] [CI] Stop compiling with -Weverything
• ARROW-6977 - [C++] Only enable jemalloc background_thread if feature is supported
• ARROW-6983 - [C++] Threaded task group crashes sometimes

Improvement

• ARROW-6610 - [C++] Add ARROW_FILESYSTEM=ON/OFF CMake configuration flag
• ARROW-6777 - [GLib][CI] Unpin gobject-introspection gem
• ARROW-6852 - [C++] memory-benchmark build failed on Arm64
• ARROW-6927 - [C++] Add gRPC version check
• ARROW-6963 - [Packaging][Wheel][OSX] Use crossbow's command to deploy artifacts from travis builds

New Feature

• ARROW-6661 - [Java] Implement APIs like slice to enhance VectorSchemaRoot

Apache Arrow 0.15.0 (30 September 2019)

Bug

... (truncated)

Commits

• b789226 [maven-release-plugin] prepare release apache-arrow-0.15.1
• 6687aed [Release] Set Maven versions to 0.15.1-SNAPSHOT
• e9f7864 [Release] Update versions for 0.15.1
• c7e9fe4 [Release] Update .deb/.rpm changelogs for 0.15.1
• 6a94d72 [Release] Update CHANGELOG.md for 0.15.1
• d02f74e ARROW-6962: [C++] [CI] Stop compiling with -Weverything
• 28d6d97 ARROW-6963: [Packaging][Wheel][OSX] Use crossbow's command to deploy artifact...
• a83a0f0 ARROW-6983: [C++] Fix ThreadedTaskGroup lifetime issue
• 4142ed5 ARROW-6977: [C++] Disable jemalloc background_thread on macOS
• c20eceb ARROW-6910: [C++][Python] Set jemalloc default configuration to release dirty...
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