TST: Update regression tests settings, reference data

.github/workflows/ci.yaml

@@ -98,10 +98,10 @@ jobs:
         python -m pytest $COV openff/interchange/ -r fExs -n logical --durations=10
 
     - name: Run small molecule regression tests
-      if: ${{ matrix.python-version == '3.10' && matrix.openeye == true && matrix.openmm == true }}
+      if: ${{ matrix.openeye == true && matrix.openmm == true }}
       run: |
-        micromamba install deepdiff rich click -c conda-forge
-        python -m pip install git+https://github.com/openforcefield/interchange-regression-testing.git
+        micromamba install "deepdiff =5" rich click -c conda-forge
+        python -m pip install git+https://github.com/openforcefield/interchange-regression-testing.git@fa07b62824c39af591142b402bd68103f4043f8b
 
         create_openmm_systems \
           --input             "regression_tests/small-molecule/input-topologies.json" \

regression_tests/toolkit-to-interchange.json

@@ -24,7 +24,7 @@
     "type": "value-changed",
     "openmm_path": "openmmVersion",
     "deepdiff_path": null,
-    "old_value": 7.7,
-    "new_value": 8.0
+    "old_value": "8.1.2",
+    "new_value": "8.1.2"
   }
 ]