include incremental regression in github workflow

Author: stilscher

.github/workflows/unlocked.yml

@@ -75,6 +75,9 @@ jobs:
       - name: Test marshal regression
         run: ruby scripts/update_suite.rb -m
 
+      - name: Test incremental regression
+        run: ruby scripts/update_suite.rb -i
+
   lower-bounds-downgrade:
     # use external 0install solver to downgrade: https://github.com/ocaml-opam/opam-0install-solver
     # TODO: will be built in in opam 2.2: https://github.com/ocaml/opam/pull/4909
@@ -147,6 +150,9 @@ jobs:
       - name: Test marshal regression
         run: ruby scripts/update_suite.rb -m
 
+      - name: Test incremental regression
+        run: ruby scripts/update_suite.rb -i
+
   lower-bounds-docker:
     # use builtin-0install solver to remove and downgrade, opam normally compiled without, Docker images have it compiled
 
@@ -228,3 +234,6 @@ jobs:
 
       - name: Test marshal regression
         run: ruby scripts/update_suite.rb -m
+
+      - name: Test incremental regression
+        run: ruby scripts/update_suite.rb -i