Bump responses version

requirements.testing.txt

@@ -2,7 +2,7 @@ pytest>=5.4.3,<6.2.5
 pytest-cov>=2.10.0,<3.0.0
 pytest-runner>=5.2,<5.3.1
 codecov==2.1.13
-responses>=0.10.15,<0.14.0
+responses==0.25.0
 six>=1.15.0,<1.16.0
 tox>=3.15.2,<3.24.4
 tox-pyenv==1.1.0