[Change]: [1.91.0, 1.91.1] Stabilize 'sse4a' and 'tbm' target features

### Change description

Stabilize 'sse4a' and 'tbm' target features

### Area

attributes

### Category

New content

### FLS Paragraph ID

N/A

### Change description (extended)

1.91 change log:
https://github.com/rust-lang/fls/pull/621

[Stabilize 'sse4a' and 'tbm' target features](https://github.com/rust-lang/rust/pull/144542)