hub image: bump jupyterhub-hmacauthenticator in /images/hub

Bumps [jupyterhub-hmacauthenticator](https://github.com/yuvipanda/jupyterhub-hmacauthenticator) from 0.1 to 1.0.
- [Release notes](https://github.com/yuvipanda/jupyterhub-hmacauthenticator/releases)
- [Commits](https://github.com/yuvipanda/jupyterhub-hmacauthenticator/commits)

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

images/hub/requirements.txt

@@ -24,7 +24,7 @@ jsonschema==3.2.0         # via jupyter-telemetry
 jupyter-telemetry==0.1.0  # via jupyterhub
 jupyterhub-dummyauthenticator==0.3.1  # via -r requirements.in
 jupyterhub-firstuseauthenticator==0.14.1  # via -r requirements.in
-jupyterhub-hmacauthenticator==0.1  # via -r requirements.in
+jupyterhub-hmacauthenticator==1.0  # via -r requirements.in
 jupyterhub-idle-culler==1.0  # via -r requirements.in
 jupyterhub-kubespawner==0.15.0  # via -r requirements.in
 jupyterhub-ldapauthenticator==1.3.2  # via -r requirements.in