update CI workflow cache restore-keys

Author: dropwhile

.github/workflows/unit-tests.yml

@@ -28,7 +28,6 @@ jobs:
           key: cache-${{ runner.os }}-${{ runner.arch }}-${{ hashFiles('mise.lock') }}-${{ hashFiles('tools/tools.conf', '**/go.sum') }}
           restore-keys: |
             cache-${{ runner.os }}-${{ runner.arch }}-${{ hashFiles('mise.lock') }}-
-            cache-${{ runner.os }}-${{ runner.arch }}-
 
       - uses: jdx/mise-action@v3
         with: