Feat rebuild ANTLR bindings

[vEpiphyte]

• Update antlr generated content to use antlr 4.13.1
• Remove six ( since its no longer required )
• Updated build / test actions to use python 3.11 and python 3.11
• Updated dev / install documentation.

Binding regeneration:

Using openjdk-19-jre-headless

java -jar ./antlr-4.13.1-complete.jar -Dlanguage=Python3 STIXPattern.g4 -visitor -o ./stix2patterns/v21/grammars
java -jar ./antlr-4.13.1-complete.jar -Dlanguage=Python3 STIXPattern.g4 -visitor -o ./stix2patterns/v20/grammars

Files taken from
https://github.com/oasis-open/cti-stix2-json-schemas/blob/stix2.0/pattern_grammar/STIXPattern.g4
https://github.com/oasis-open/cti-stix2-json-schemas/blob/stix2.1/pattern_grammar/STIXPattern.g4

$ sha256sum STIXPattern.g4*
a5fab115c8973680f13274113ba1d9c1fe5708b00805a06644c7ce717c42ff19  STIXPattern.g4.20
b6429e8fed902133d2409d86c906b0c9dbaa4a54536023997ee73b460876b228  STIXPattern.g4.21

Bindings were committed as is.

The test suite for https://github.com/oasis-open/cti-pattern-matcher and https://github.com/oasis-open/cti-stix-validator pass with these updated bindings.

The tox suite seems to fail on a packaing step. That is unrelated to this PR.

Closes #84

[vEpiphyte]

@clenk @chisholm Can this be reviewed?

[CLAassistant]

All committers have signed the CLA.

[brianatdetections]

@vEpiphyte Hi! I've opened PR #100 which builds on similar work to this PR.

It uses ANTLR 4.13.2 (vs 4.13.1 here), adds Python 3.13 support, includes an automated regeneration script, and updates all three grammar directories. I also fixed the v20 inspector to handle the TimestampLiteral API change.

Happy to coordinate so we don't duplicate effort. If you'd like, we could consolidate the work into one PR. Let me know your thoughts!

[vEpiphyte]

@brianatdetections I will close this in favor of your PR. The only real "feature" that mine had over #100 was the removal of the six library. It is no longer needed since python 2.7 support has been dropped in #82 .

I'll open a separate PR that cherry picks ec5b7be and then close this PR once that is available.

[vEpiphyte]

Opened #101 to remove six from the library. Closing this since it is overtaken by #100 .