[Enhancement]Change python interpreter from python to python3 in fe-core module

[monkeyboy123]

Why I'm doing:

It is more reasonable. In Starrrock 3.3.5/master
In some enviroment, python infer python2,it cause error blow, if we build fe using mvn clean install -DskipTests:

ERROR] starrocks/fe/fe-core/src/main/java/com/starrocks/qe/StmtExecutor.java:[75,28] cannot find symbol
[ERROR]   symbol:   class Version
[ERROR]   location: package com.starrocks.common
[ERROR] starrocks/fe/fe-core/src/main/java/com/starrocks/system/HeartbeatMgr.java:[44,28] cannot find symbol
[ERROR]   symbol:   class Version
[ERROR]   location: package com.starrocks.common
[ERROR] starrocks/fe/fe-core/src/main/java/com/starrocks/load/streamload/StreamLoadTask.java:[27,28] cannot find symbol
[ERROR]   symbol:   class Version
[ERROR]   location: package com.starrocks.common
[ERROR] starrocks/fe/fe-core/src/main/java/com/starrocks/connector/hive/HiveMetastoreApiConverter.java:[31,28] cannot find symbol
[ERROR]   symbol:   class Version
[ERROR]   location: package com.starrocks.common
[ERROR] starrocks/fe/fe-core/src/main/java/com/starrocks/StarRocksFE.java:[43,28] cannot find symbol
[ERROR]   symbol:   class Version
[ERROR]   location: package com.starrocks.common
[ERROR] starrocks/fe/fe-core/src/main/java/com/starrocks/load/loadv2/LoadLoadingTask.java:[44,28] cannot find symbol
[ERROR]   symbol:   class Version
[ERROR]   location: package com.starrocks.common
[ERROR] starrocks/fe/fe-core/src/main/java/com/starrocks/http/action/IndexAction.java:[38,28] cannot find symbol
[ERROR]   symbol:   class Version
[ERROR]   location: package com.starrocks.common
[ERROR] starrocks/fe/fe-core/src/main/java/com/starrocks/http/rest/FeatureAction.java:[17,28] cannot find symbol
[ERROR]   symbol:   class Version
[ERROR]   location: package com.starrocks.common
[ERROR] starrocks/fe/fe-core/src/main/java/com/starrocks/sql/optimizer/dump/QueryDumpSerializer.java:[29,28] cannot find symbol
[ERROR]   symbol:   class Version
[ERROR]   location: package com.starrocks.common
[ERROR] starrocks/fe/fe-core/src/main/java/com/starrocks/qe/GlobalVariable.java:[39,28] cannot find symbol
[ERROR]   symbol:   class Version
[ERROR]   location: package com.starrocks.common
[ERROR] starrocks/fe/fe-core/src/main/java/com/starrocks/http/rest/BootstrapFinishAction.java:[41,28] cannot find symbol
[ERROR]   symbol:   class Version
[ERROR]   location: package com.starrocks.common

What I'm doing:

Change python interpreter from python to python3
Fixes ##52733

What type of PR is this:

• BugFix
• Feature
• Enhancement
• Refactor
• UT
• Doc
• Tool

Does this PR entail a change in behavior?

• Yes, this PR will result in a change in behavior.
• No, this PR will not result in a change in behavior.

If yes, please specify the type of change:

• Interface/UI changes: syntax, type conversion, expression evaluation, display information
• Parameter changes: default values, similar parameters but with different default values
• Policy changes: use new policy to replace old one, functionality automatically enabled
• Feature removed
• Miscellaneous: upgrade & downgrade compatibility, etc.

Checklist:

• I have added test cases for my bug fix or my new feature
• This pr needs user documentation (for new or modified features or behaviors)
  • I have added documentation for my new feature or new function
• This is a backport pr

Bugfix cherry-pick branch check:

• I have checked the version labels which the pr will be auto-backported to the target branch
  • 3.3
  • 3.2
  • 3.1
  • 3.0
  • 2.5

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