Tries to isolate the MSRV to one place

Author: akern40

.github/workflows/ci.yaml

@@ -15,6 +15,14 @@ env:
   MSRV: 1.64.0
 
 jobs:
+  pass-msrv:
+    runs-on: ubuntu-latest
+    outputs:
+      MSRV: ${{ env.MSRV }}
+    steps:
+      - name: Pass MSRV
+        run: echo "MSRV=${{ env.MSRV }}" >> $GITHUB_OUTPUT
+
   clippy:
     runs-on: ubuntu-latest
     strategy:
@@ -69,13 +77,14 @@ jobs:
 
   tests:
     runs-on: ubuntu-latest
+    needs: pass-msrv
     strategy:
       matrix:
         rust:
           - stable
           - beta
           - nightly
-          - ${{ env.MSRV }}
+          - ${{ needs.pass-msrv.outputs.MSRV }}
 
     name: tests/${{ matrix.rust }}
     steps: