ARROW-7036: [C++] Version up ORC to avoid compile errors

[mrkn]

ORC 1.5.5 has some compile errors occurred on Xcode 11.
The version 1.5.7 resolves them.

[github-actions]

https://issues.apache.org/jira/browse/ARROW-7036

[codecov-io]

Codecov Report

Merging #5762 into master will increase coverage by 0.54%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #5762      +/-   ##
==========================================
+ Coverage   88.99%   89.54%   +0.54%     
==========================================
  Files        1006      814     -192     
  Lines      137241   121731   -15510     
  Branches     1501        0    -1501     
==========================================
- Hits       122134   108998   -13136     
+ Misses      14742    12733    -2009     
+ Partials      365        0     -365

Impacted Files	Coverage Δ
cpp/src/arrow/util/thread_pool_test.cc	97.66% <0%> (-0.94%)	⬇️
python/pyarrow/tests/test_parquet.py	95.24% <0%> (-0.06%)	⬇️
go/arrow/ipc/writer.go
go/arrow/math/uint64_amd64.go
go/arrow/memory/memory_avx2_amd64.go
go/arrow/ipc/file_reader.go
js/src/builder/index.ts
js/src/enum.ts
go/arrow/array/builder.go
js/src/util/fn.ts
... and 184 more

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[kou]

+1