Improve cache naming.

Author: notroj

.github/workflows/linux.yml

@@ -76,18 +76,14 @@ jobs:
     - uses: actions/checkout@v3
     - name: Cache installed libraries
       uses: actions/cache@v3
-      env:
-        cache-name: cache-libs
       with:
         path: ~/root
-        key: cache-${{ env.JOBID }}
+        key: cache-libs-${{ env.JOBID }}
     - name: Cache CPAN modules
       uses: actions/cache@v3
-      env:
-        cache-name: cache-cpan
       with:
         path: ~/perl5
-        key: cache-${{ env.JOBID }}
+        key: cache-cpan-${{ env.JOBID }}
     - name: Configure environment
       run: ./test/travis_before_linux.sh
       timeout-minutes: 15