Update versions in readme.md (#7941)

Author: NicolasHug

README.md

@@ -21,15 +21,16 @@ versions.
 | `torch`            | `torchvision`      | Python              |
 | ------------------ | ------------------ | ------------------- |
 | `main` / `nightly` | `main` / `nightly` | `>=3.8`, `<=3.11`   |
+| `2.1`              | `0.16`             | `>=3.8`, `<=3.11`   |
 | `2.0`              | `0.15`             | `>=3.8`, `<=3.11`   |
 | `1.13`             | `0.14`             | `>=3.7.2`, `<=3.10` |
-| `1.12`             | `0.13`             | `>=3.7`, `<=3.10`   |
 
 <details>
     <summary>older versions</summary>
 
 | `torch` | `torchvision`     | Python                    |
 |---------|-------------------|---------------------------|
+| `1.12`  | `0.13`            | `>=3.7`, `<=3.10`         |
 | `1.11`  | `0.12`            | `>=3.7`, `<=3.10`         |
 | `1.10`  | `0.11`            | `>=3.6`, `<=3.9`          |
 | `1.9`   | `0.10`            | `>=3.6`, `<=3.9`          |