Make the CI file filter more specific (#734)

Author: sbryngelson

.github/file-filter.yml

@@ -22,12 +22,16 @@ scripts: &scripts
   - 'toolchain/bootstrap/**'
 
 yml: &yml
-  - '**/*.yml'
+  - '.github/workflows/phoenix/**'
+  - '.github/workflows/frontier/**'
+  - '.github/workflows/bench.yml'
+  - '.github/workflows/test.yml'
+  - '.github/workflows/formatting.yml'
 
 checkall: &checkall
   - *fortran_src
   - *python_src
   - *cmakelist
   - *tests
   - *scripts
-  - *yml
+  - *yml

.github/workflows/bench.yml

@@ -20,7 +20,8 @@ jobs:
 
   self:
     name: Georgia Tech | Phoenix (NVHPC)
-    if: github.repository == 'MFlowCode/MFC'
+    if: github.repository == 'MFlowCode/MFC' && needs.file-changes.outputs.checkall == 'true'
+    needs: file-changes
     strategy:
       matrix:
         device: ['cpu', 'gpu']