[SPARK-55841][BUILD][FOLLOWUP] Update SparkBuild.scala consistently

[dongjoon-hyun]

What changes were proposed in this pull request?

This PR aims to update the default value of fasterxml.jackson.version in SparkBuild.scala consistently.

Why are the changes needed?

Although we update Jackson to 2.21.x already, Sparkbuild.scala has outdated value like the following.

• [SPARK-55116][BUILD] Upgrade Jackson to 2.21.0 #53886
• [SPARK-55841][BUILD] Upgrade jackson to 2.21.1 #54626

spark/project/SparkBuild.scala

Line 1189 in 3126983

lazyvaljacksonVersion= sys.props.get("fasterxml.jackson.version").getOrElse("2.20.1")

MAVEN

$ mvn dependency:tree | grep jackson-annotations | sort | uniq
[INFO] +- com.fasterxml.jackson.core:jackson-annotations:jar:2.21:compile
[INFO] | | +- com.fasterxml.jackson.core:jackson-annotations:jar:2.21:compile
[INFO] | \- com.fasterxml.jackson.core:jackson-annotations:jar:2.21:compile
[INFO] | +- com.fasterxml.jackson.core:jackson-annotations:jar:2.21:compile
[INFO] | | \- com.fasterxml.jackson.core:jackson-annotations:jar:2.21:compile
[INFO] | | +- com.fasterxml.jackson.core:jackson-annotations:jar:2.21:compile
[INFO] | | | +- com.fasterxml.jackson.core:jackson-annotations:jar:2.21:compile
[INFO] | | | | +- com.fasterxml.jackson.core:jackson-annotations:jar:2.21:compile

SBT

$ build/sbt dependencyTree | grep jackson-annotations
Using SPARK_LOCAL_IP=localhost
[info] | +-com.fasterxml.jackson.core:jackson-annotations:2.20
[info] | +-com.fasterxml.jackson.core:jackson-annotations:2.20
[info] | +-com.fasterxml.jackson.core:jackson-annotations:2.20
[info] | +-com.fasterxml.jackson.core:jackson-annotations:2.20
...

Does this PR introduce any user-facing change?

No.

How was this patch tested?

Pass the CIs.

Was this patch authored or co-authored using generative AI tooling?

Generated-by: Gemini 3.1 Pro (High) on Antigravity.

[dongjoon-hyun]

Could you review this PR, @LuciferYang ?

[dongjoon-hyun]

Thank you, @yaooqinn !

Currently, the clean sbt build seems to fail.

$ build/sbt package
...
[error] lmcoursier.internal.shaded.coursier.error.FetchError$DownloadingArtifacts: Error fetching artifacts:
[error] file:/Users/dongjoon/.m2/repository/com/fasterxml/jackson/core/jackson-annotations/2.20/jackson-annotations-2.20.jar: not found: /Users/dongjoon/.m2/repository/com/fasterxml/jackson/core/jackson-annotations/2.20/jackson-annotations-2.20.jar

[dongjoon-hyun]

Merged to master.

[LuciferYang]

late LGTM

[dongjoon-hyun]

Thank you, @LuciferYang !