!toolchain: update binutils to 2.43

[badochov]

Description

Binutils 2.39 introduced two new warning more info here: https://www.redhat.com/en/blog/linkers-warnings-about-executable-stacks-and-segments
Thus patches in plo and build are needed.

Motivation and Context

Binutils had a bug till 2.37 in generating thumb on arm v8m-base.
Updating to newer binutils can lead to mergin our patches to binutils upstream.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Chore (refactoring, style fixes, git/CI config, submodule management, no code logic changes)

How Has This Been Tested?

• Already covered by automatic testing.
• New test added: (add PR link here).
• Tested by hand on: (list targets here).

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing linter checks and tests passed.
• My changes generate no new compilation warnings for any of the targets.

Special treatment

• This PR needs additional PRs to work
  !toolchain/ld: change arm emul #202
  To eliminate new warnings:
  build: add noexecstack phoenix-rtos-project#1160

• I will merge this PR by myself when appropriate.

[github-actions]

Unit Test Results

7 723 tests  ±0   7 008 ✅ ±0   38m 32s ⏱️ -19s
  443 suites ±0     715 💤 ±0 
    1 files   ±0       0 ❌ ±0 

Results for commit c9f70a2. ± Comparison against base commit 2dc9570.

♻️ This comment has been updated with latest results.

[badochov]

Demo: phoenix-rtos/phoenix-rtos-project#1161

The merge-base changed after approval.