[SPARK-44168][FOLLOWUP] Change v3.4 GPG_KEY to full key fingerprint

[Yikun]

What changes were proposed in this pull request?

Change GPG key from 34F0FC5C to F28C9C925C188C35E345614DEDA00CE834F0FC5C to avoid pontential collision.

The full finger print can get from below cmd:

$ wget https://dist.apache.org/repos/dist/dev/spark/KEYS
$ gpg --import KEYS
$ gpg --fingerprint 34F0FC5C

pub   rsa4096 2015-05-05 [SC]
      F28C 9C92 5C18 8C35 E345  614D EDA0 0CE8 34F0 FC5C
uid           [ unknown] Dongjoon Hyun (CODE SIGNING KEY) <[email protected]>
sub   rsa4096 2015-05-05 [E]

Why are the changes needed?

• A short gpg key had been added as v3.4.0 gpg key in [SPARK-44168] Add Apache Spark 3.4.1 Dockerfiles #46 .
• The short key 34F0FC5C is from https://dist.apache.org/repos/dist/dev/spark/KEYS
• According DOI review comments, Add Apache Spark Docker Official Image docker-library/official-images#13089 (comment) , this should be the full key fingerprint: F28C9C925C188C35E345614DEDA00CE834F0FC5C (generating a collision for such a short key ID is trivial.
• We'd better to switch the short key to full fingerprint

Does this PR introduce any user-facing change?

No

How was this patch tested?

CI passed

[Yikun]

cc @HyukjinKwon @zhengruifeng

[Yikun]

It only effect on docker image build process (gpg verify process), consider CI already has passed, I will merge this soon to let DOI review. Please let me know if you have more concern.