Infer Parquet JSON Logical and Converted Type as UTF-8

[tustvold]

Which issue does this PR close?

Relates to #3373

Rationale for this change

JSON data must be UTF-8, we can therefore safely infer json fields as containing UTF8 data. This leads to a superior experience as BinaryArray cannot be output to non-binary formats such as CSV and JSON.

What changes are included in this PR?

Are there any user-facing changes?

[tustvold]

There is a draft PR in apache/arrow#13901 that adds a canonical arrow extension type for JSON data backed by UTF-8 arrays.

[alamb]

Seems reasonable to me -- I think we ought to have a test for it, however, to avoid regressions in the future

[tustvold]

There is a test?

[alamb]

👍 here is the test

[ursabot]

Benchmark runs are scheduled for baseline = 9cdc1c1 and contender = a8968cd. a8968cd is a master commit associated with this PR. Results will be available as each benchmark for each run completes.
Conbench compare runs links:
[Skipped ⚠️ Benchmarking of arrow-rs-commits is not supported on ec2-t3-xlarge-us-east-2] ec2-t3-xlarge-us-east-2
[Skipped ⚠️ Benchmarking of arrow-rs-commits is not supported on test-mac-arm] test-mac-arm
[Skipped ⚠️ Benchmarking of arrow-rs-commits is not supported on ursa-i9-9960x] ursa-i9-9960x
[Skipped ⚠️ Benchmarking of arrow-rs-commits is not supported on ursa-thinkcentre-m75q] ursa-thinkcentre-m75q
Buildkite builds:
Supported benchmarks:
ec2-t3-xlarge-us-east-2: Supported benchmark langs: Python, R. Runs only benchmarks with cloud = True
test-mac-arm: Supported benchmark langs: C++, Python, R
ursa-i9-9960x: Supported benchmark langs: Python, R, JavaScript
ursa-thinkcentre-m75q: Supported benchmark langs: C++, Java