Add missing alpha feature releases

[QuanZhang-William]

Changes

This commit updates missing releases (and links) for alpha features in additional-configs.md.

/kind documentation

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Release Notes

NONE

[QuanZhang-William]

/cc @Yongxuanzhang

Is v0.49.0 the release that we officially support trusted resources?

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[Yongxuanzhang]

/cc @Yongxuanzhang

Is v0.49.0 the release that we officially support trusted resources?

Yes, thanks for adding it

[QuanZhang-William]

Also updated in #7445

/close