build: Add linux-arm64 build

[hallvictoria]

Description

Adds linux-arm64 builds.
Note: win-arm64 is not supported because GRPC does not have a win-arm64 build.

Testing fixes:

• Fixes skipTest variable setting
• Skips deferred bindings cache tests for 3.13 for now

Pipeline refactoring:

• Removes CodeQL from release pipeline
• Refactors pack/ into eng/
• Refactor workerPath into top-level variables
• Fixes Python minor version check in env_gen templates

Build fixes:

• Puts OSX_ARM64 build into OSX/ARM64 folder

Fixes #1643

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[hallvictoria]

workerPath is set above. For Python 3.12 & under, the path is python/prodV4/worker.py. For 3.13+, it is python/proxyV4/worker.py

[hallvictoria]

One of the comments from the 3.13 PR was to make workerPath a top-level variable. Since workerPath is different based on 3.13+ and <3.13, it can't be a global variable. The solution was to instead define 2 new global variables: one for the prodv4 path, and one for the proxyv4 path. Then, in the env_gen files, we determine which path to use based on the python version.