Update einops requirement from <0.7.0,>=0.6.0 to >=0.6.0,<0.8.0

Updates the requirements on [einops](https://github.com/arogozhnikov/einops) to permit the latest version.
- [Release notes](https://github.com/arogozhnikov/einops/releases)
- [Commits](arogozhnikov/einops@v0.6.0...v0.7.0)

---
updated-dependencies:
- dependency-name: einops
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

requirements.txt

@@ -13,6 +13,6 @@ PyYAML >=5.4, <6.1.0
 # importlib-metadata <1,>=0.12
 #matplotlib >3.1
 ipywidgets
-einops >=0.6.0, <0.7.0
+einops >=0.6.0, <0.8.0
 rich >=11.0.0
 entmax>=1.1