Update rui314/setup-mold digest to 7e4f20a

Author: renovate[bot]

.github/actions/setup-rust/action.yml

@@ -36,7 +36,7 @@ runs:
 
     - name: Install Mold
       if: runner.os == 'Linux'
-      uses: rui314/setup-mold@9c9c13bf4c3f1adef0cc596abc155580bcb04444  # v1
+      uses: rui314/setup-mold@7e4f20ad28a2e8ca6fd0892ccf72e2abb706b9c3  # v1
 
     - name: Check for rustup
       id: check-rustup