Merge pull request #67 from opensource-observer/s8-m7

chore: add retrofunding S8-M7 results

Author: ccerv1

data/funders/optimism/optimism.yaml

@@ -17,4 +17,6 @@ grant_pools:
   - name: retrofunding5
   - name: retrofunding6
   - name: retrofunding_s7_devtooling
-  - name: retrofunding_s7_onchain_builders
+  - name: retrofunding_s7_onchain_builders
+  - name: retrofunding_s8_devtooling
+  - name: retrofunding_s8_onchain_builders