Update installers.yml

Author: Wojciech Potrzebowski

.github/workflows/installers.yml

@@ -107,7 +107,7 @@ jobs:
     - name: Fetch sources for sibling projects
       run: |
         git clone --depth=1 --branch=release_1.0.7 https://github.com/SasView/sasmodels.git ../sasmodels
-        git clone --depth=1 --branch=v0.9.0 https://github.com/bumps/bumps.git ../bumps
+        git clone --depth=1 --branch=v0.9.1 https://github.com/bumps/bumps.git ../bumps
 
     - name: Build and install sasmodels
       run: |