Bump bqskit from 1.1.1 to 1.2.0

Bumps [bqskit](https://github.com/BQSKit/bqskit) from 1.1.1 to 1.2.0.
- [Release notes](https://github.com/BQSKit/bqskit/releases)
- [Commits](BQSKit/bqskit@1.1.1...1.2.0)

---
updated-dependencies:
- dependency-name: bqskit
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

requirements/requirements-dev.txt

@@ -24,7 +24,7 @@ pandas==2.1.3
 pyscf==2.7.0; sys_platform != 'win32'
 openfermion==1.6.1; sys_platform != 'win32'
 openfermionpyscf==0.5; sys_platform != 'win32'
-bqskit==1.1.1
+bqskit==1.2.0
 seaborn==0.13.0
 stim==1.14.0
 stimcirq==1.14.0