fix: Update to MorphoCloud/MorphoCloudWorkflow@057c707

List of MorphoCloudWorkflow changes:

```
$ git shortlog 0f35a29..057c707 --no-merges
Jean-Christophe Fillion-Robin (2):
      feat(create-instance): Increase MyData volume size from 60GB to 100GB
      fix(cloud-config): Update to MorphoCloud/exosphere@5faa1fbef
```

See MorphoCloud/MorphoCloudWorkflow@0f35a29...057c707

.github/workflows/create-instance.yml

@@ -175,7 +175,7 @@ jobs:
         run: |
           source ~/venv/bin/activate
 
-          openstack volume create --size 60 "${VOLUME_NAME}"
+          openstack volume create --size 100 "${VOLUME_NAME}"
         env:
           OS_CLOUD: ${{ vars.MORPHOCLOUD_OS_CLOUD }}
           VOLUME_NAME: ${{ steps.define_volume_name.outputs.volume_name }}

cloud-config

@@ -36,7 +36,7 @@ runcmd:
     # --checkout "{instance-config-mgt-repo-checkout}"
     # -e "{ansible-extra-vars}"
     rm -rf /opt/instance-config-mgt
-    exosphere_sha="d6a32c58c922614c9f3d9c2232f2464f0b81fc02" # morpho-cloud-portal-2024.07.17-78a7e2d93
+    exosphere_sha="5faa1fbef47fc4fb588b44fa0b577d7d72b64db5" # morpho-cloud-portal-2024.07.17-78a7e2d93
     ansible-pull \
       --url "https://github.com/MorphoCloud/exosphere.git" \
       --checkout "$exosphere_sha" \