Bump qiskit-aer-gpu from 0.15.0 to 0.15.1

Bumps [qiskit-aer-gpu](https://github.com/Qiskit/qiskit-aer) from 0.15.0 to 0.15.1.
- [Release notes](https://github.com/Qiskit/qiskit-aer/releases)
- [Commits](Qiskit/qiskit-aer@0.15...0.15.1)

---
updated-dependencies:
- dependency-name: qiskit-aer-gpu
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

setup.py

@@ -65,6 +65,6 @@
                       # GPU optimization not available on all platform.
                       # See https://github.com/Qiskit/qiskit-aer/issues/929#issuecomment-691716936
                       'optim': ['qiskit-symb', 'symengine==0.11.0'],
-                      'optim_linux': ['qiskit-aer-gpu==0.15.0']},
+                      'optim_linux': ['qiskit-aer-gpu==0.15.1']},
       zip_safe=False,
 )