Fix new linter errors

lib/debug-artifacts.js

@@ -55,7 +55,7 @@ async function uploadDebugArtifacts(toUpload, rootDir, artifactName) {
             for (const [, matrixVal] of Object.entries(JSON.parse(matrix)).sort())
                 suffix += `-${matrixVal}`;
         }
-        catch (e) {
+        catch {
             core.info("Could not parse user-specified `matrix` input into JSON. The debug artifact will not be named with the user's `matrix` input.");
         }
     }