Update Bazel native recipe from 7.4.1 to 8.6.0

[Copilot]

The meta-leda-score layer was pinned to Bazel 7.4.1; update to the latest stable 8.x release (8.6.0, released 2026-02-26).

Changes

• bazel-native_7.4.1.bb → bazel-native_8.6.0.bb: Updated PV, binary download URL, and SRC_URI[sha256sum]

  SRC_URI[sha256sum] = "9860da9c9386bbc023feed8f43af3105d338727d77b644fa6aeca45a4a11957c"
  

• bazel.bbclass: Default BAZEL_VERSION bumped 7.4.1 → 8.6.0
• README.md: Version references updated from 7.4.1/7.x to 8.6.0/8.x

Original prompt

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This section details on the original issue you should resolve

<issue_title>Add Eclipse S-Core metalayer</issue_title>
<issue_description>The Eclipse S-Core (short: score) project provides an automotive middleware layer comparable to Adaptive Autosar. The Leda project should support score by adding recipes for all score components, such as the communication module, the time synchronization daemon and the SOME/IP Gateway and the example applications.

S-Core uses Bazel as the build system and we need to check how to integrate a Bazel build into our Yocto build environment.</issue_description>

<agent_instructions>This might be a larger task. Split up into subtasks to make planning and execution more structured and easier to integrate.</agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes Add Eclipse S-Core metalayer #216

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