conflicting bazel version

we have bazel version specified in two places:
```
cat .bazeliskrc 
BAZELISK_BASE_URL=https://static.aspect.build/aspect
USE_BAZEL_VERSION=aspect/2025.19.5
(.python) mav@idoniko:~/Repositories/cpp$ cat .bazelversion 
8.4.0
```

I believe .bazelversion is unnecessary w/ bazelisk