Set workflows to use nightly agent images

Author: shubhamshinde360

.github/workflows/ci.yml

@@ -47,7 +47,7 @@ jobs:
       - setup_matrix
     if: ${{ needs.setup_matrix.outputs.matrix != '{}' }}
 
-    runs-on: ubuntu-24.04
+    flags: "--nightly"
     strategy:
       fail-fast: false
       matrix: ${{fromJson(needs.setup_matrix.outputs.matrix)}}

.github/workflows/nightly.yml

@@ -46,7 +46,7 @@ jobs:
       - setup_matrix
     if: ${{ needs.setup_matrix.outputs.matrix != '{}' }}
 
-    runs-on: ubuntu-24.04
+    flags: "--nightly"
     strategy:
       fail-fast: false
       matrix: ${{fromJson(needs.setup_matrix.outputs.matrix)}}