Bump Externals/sse2neon from `efcbd51` to `755234d`

Created by: dependabot[bot]

Bumps Externals/sse2neon from efcbd51 to 755234d.

Commits

• 755234d Revise IQ-TREE repository
• 9da9f38 Mention RPCS3 as a new adoption case
• b58ebb3 Merge pull request #509 from luzpaz/typos
• 98bce0f Fix various typos
• 0999cbd Mention nanors as a new adoption case
• 57bd5b3 Use asm volatile to improve compatibility (#508)
• 71cd606 Mention NVIDIA GameWorks as a new adoption case
• 8dc61a4 Recent OBS releases obviate sse2neon in favor of SIMDe
• 50e33e3 Mention Cog as a new adoption case
• 95997e2 Mention ofxNDIt as a new adoption case
• Additional commits viewable in compare view

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