Switch to feature-variants branch of openrndr in workflows

Author: edwinRNDR

.github/workflows/build.yml

@@ -26,7 +26,7 @@ jobs:
           fetch-depth: 0
           repository: openrndr/openrndr
           path: ./openrndr
-          ref: master
+          ref: feature-variants
 
       - name: Test glxinfo
         run: |

.github/workflows/generate-screenshots.yml

@@ -22,7 +22,7 @@ jobs:
           fetch-depth: 0
           repository: openrndr/openrndr
           path: ./openrndr
-          ref: master
+          ref: feature-variants
 
       - name: Test glxinfo
         run: |