Update all dependencies in the -rag images to their latest versions

[mikebonnet]

Summary by Sourcery

Update RAG container image dependency lockfiles and standardize Python platform selection for x86_64 and aarch64 builds.

Enhancements:

• Simplify platform selection in the common container Makefile by inlining manylinux_2_28 targets for x86_64 and aarch64 RAG backends.

Chores:

• Regenerate all RAG backend requirements lockfiles to pull in the latest compatible dependency versions.

[sourcery-ai[bot]]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

This PR standardizes how Python platforms are selected for RAG backend image lockfile generation, updates all RAG backend requirements lockfiles to the latest compatible versions, and adjusts the bats image base packages to support Python development tooling across architectures.

File-Level Changes

Change	Details	Files
Simplify and standardize Python platform selection for generating RAG backend requirements lockfiles.	Remove the separate AARCH64_PLATFORM variable from the common container Makefile. Inline the python platform selection into the uv pip compile invocation based on whether the backend name contains 'aarch64'. Ensure x86_64 and aarch64 builds both target manylinux_2_28 with explicit platform strings.	container-images/common/Makefile
Adjust bats container base packages to support Python-based tooling and builds.	Add gcc to the bats container image to support building native extensions or compiling code during tests. Replace python3 with python3 python3-devel to ensure headers and dev tooling are present while keeping python3-pip installed for package management.	container-images/bats/Containerfile
Refresh RAG backend Python dependency lockfiles to latest compatible versions for all supported backends and architectures.	Regenerate the CPU, CUDA (cu128), ROCm, Intel XPU, and their aarch64 variants requirements-rag-*.txt using the updated Makefile. Update pinned versions and hashes across all RAG backend requirements files to match the current dependency resolver output.	container-images/common/requirements-rag-cpu-aarch64.txt container-images/common/requirements-rag-cpu.txt container-images/common/requirements-rag-cu128-aarch64.txt container-images/common/requirements-rag-cu128.txt container-images/common/requirements-rag-rocm6.3.txt container-images/common/requirements-rag-xpu.txt

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[rhatdan]

LGTM