Extend CI resolutions: 1D to N=256, 2D to N=128

Author: sbryngelson

.github/workflows/convergence.yml

@@ -37,7 +37,7 @@ jobs:
       - name: Run 1D convergence tests
         run: |
           python toolchain/mfc/test/run_convergence_1d.py \
-            --resolutions 32 64 128
+            --resolutions 32 64 128 256
 
   convergence-2d:
     name: "2D Isentropic Vortex Convergence"
@@ -64,4 +64,4 @@ jobs:
       - name: Run 2D convergence tests
         run: |
           python toolchain/mfc/test/run_convergence.py \
-            --resolutions 16 32 64
+            --resolutions 16 32 64 128