Enable another minimal-versions lint

Author: tarcieri

.github/workflows/dbl.yml

@@ -45,11 +45,10 @@ jobs:
           targets: ${{ matrix.target }}
       - run: cargo build --target ${{ matrix.target }}
 
-  # TODO(tarcieri): disabled until it can be made compatible with workspace-level lints
-  #  minimal-versions:
-  #    uses: RustCrypto/actions/.github/workflows/minimal-versions.yml@master
-  #    with:
-  #      working-directory: ${{ github.workflow }}
+  minimal-versions:
+    uses: RustCrypto/actions/.github/workflows/minimal-versions.yml@master
+    with:
+      working-directory: ${{ github.workflow }}
 
   test:
     runs-on: ubuntu-latest