Test mgm with 1.65

Author: baloo

.github/workflows/mgm.yml

@@ -23,7 +23,8 @@ jobs:
     strategy:
       matrix:
         rust:
-          - 1.56.0 # MSRV
+          # MSRV is at 1.56, but we have dependencies in the workspace that are 1.65
+          - 1.65.0 # MSRV
           - stable
         target:
           - thumbv7em-none-eabi
@@ -41,7 +42,8 @@ jobs:
     strategy:
       matrix:
         rust:
-          - 1.56.0 # MSRV
+          # MSRV is at 1.56, but we have dependencies in the workspace that are 1.65
+          - 1.65.0 # MSRV
           - stable
     steps:
       - uses: actions/checkout@v4