[SPARK-39959][BUILD][INFRA] Pin roxygen2 version to 7.2.0 in infra

[Yikun]

What changes were proposed in this pull request?

Pin roxygen2 to 7.2.0 to make sparkr job work

Why are the changes needed?

R job failed due to checking for missing documentation entries

Does this PR introduce any user-facing change?

No

How was this patch tested?

All CI passed (lint/sparkr/pyspark)

[dongjoon-hyun]

Thank you for taking a look at this, @Yikun .

[Yikun]

• The root reason of sparkr job failed should be roxygen2 7.2.0 --> 7.2.1
• Docker cache not working (looks like is outdate for some reason) since 2 days before
  • https://www.diffchecker.com/TpOlQsg1 from results, it might related to change on github action docker config change.
• Then do a real time build in each job, roxygen2 is upgraded in real time build job.

Solution: merge this if all CI passed (This will also do a cache refresh to make cache back again)

[dongjoon-hyun]

Thank you, @Yikun .
Since master branch has been broken for a while, I converted this to a normal PR and merged to master to recover it.

[HyukjinKwon]

Awesome!!!!!

[Yikun]

@dongjoon-hyun @HyukjinKwon Thanks, I do a local test in my repo all works well!

I also take a deep look on why cache is outdated: the ubuntu:20.04 hash changes before and after cache outdate. (looks like FROM is a specific case in docker registry cache, it's not based on static text match? or some other reason to trigger the full update? Need to do a confirm. it will find the real hash of image rather than static text match)

There might some improvement in followup:

• [SPARK-39974][INFRA] Create separate static image tag for infra cache #37402 Add separate image tag to help debug and recover CI if needed.
• [SPARK-39980][INFRA] Change infra image to static tag: ubuntu:focal-20220801 #37403 Pin to ubuntu:20.04 to static hash, and only change it when upgrade the hash when manully

[LuciferYang]

Thanks @Yikun