TEZ-4670: Upgrade spotless plugin to 3.x

[abstractdog]

No description provided.

[tez-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	29m 30s		Docker mode activated.
			_ Prechecks _
+1 💚	dupname	0m 0s		No case conflicting files found.
+0 🆗	detsecrets	0m 0s		detect-secrets was not available.
+0 🆗	xmllint	0m 0s		xmllint was not available.
+1 💚	@author	0m 0s		The patch does not contain any @author tags.
-1 ❌	test4tests	0m 0s		The patch doesn't appear to include any new or modified tests. Please justify why no new tests are needed for this patch. Also please list what manual steps were performed to verify this patch.
			_ master Compile Tests _
+1 💚	mvninstall	11m 25s		master passed
+1 💚	compile	2m 29s		master passed
+1 💚	javadoc	1m 41s		master passed
			_ Patch Compile Tests _
+1 💚	mvninstall	5m 6s		the patch passed
+1 💚	codespell	1m 3s		No new issues.
+1 💚	compile	2m 33s		the patch passed
+1 💚	javac	2m 33s		the patch passed
+1 💚	blanks	0m 0s		The patch has no blanks issues.
+1 💚	javadoc	1m 21s		the patch passed
			_ Other Tests _
+1 💚	unit	71m 27s		root in the patch passed.
+1 💚	asflicense	0m 37s		The patch does not generate ASF License warnings.
		129m 1s

Subsystem	Report/Notes
Docker	ClientAPI=1.52 ServerAPI=1.52 base: https://ci-hadoop.apache.org/job/tez-multibranch/job/PR-447/1/artifact/out/Dockerfile
GITHUB PR	#447
Optional Tests	dupname asflicense javac javadoc unit codespell detsecrets xmllint compile
uname	Linux f64b572c6698 5.15.0-164-generic #174-Ubuntu SMP Fri Nov 14 20:25:16 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	/home/jenkins/jenkins-agent/workspace/tez-multibranch_PR-447/src/.yetus/personality.sh
git revision	master / 78c3e12
Default Java	Ubuntu-21.0.9+10-Ubuntu-124.04
Test Results	https://ci-hadoop.apache.org/job/tez-multibranch/job/PR-447/1/testReport/
Max. process+thread count	2096 (vs. ulimit of 5500)
modules	C: . U: .
Console output	https://ci-hadoop.apache.org/job/tez-multibranch/job/PR-447/1/console
versions	git=2.43.0 maven=3.8.7 codespell=2.0.0
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[ayushtkn]

@abstractdog I think we need to touch some files to test, I don't think the CI ran the spotbugs here

[abstractdog]

@abstractdog I think we need to touch some files to test, I don't think the CI ran the spotbugs here

be mindful that it's about the spotless plugin, not spotbugs
spotless already kicks in for a simple mvn clean install

[ayushtkn]

Ahhh, my bad
LGTM