benchmark: increase lint compliance

Remove two eslint-disable comments by replacing string concatenation
with template literals. These changes are in catch blocks that are not
part of the actual code being benchmarked.

PR-URL: #23305
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>

Author: Trott

benchmark/napi/function_args/index.js

@@ -12,16 +12,14 @@ let napi;
 try {
   v8 = require('./build/Release/binding');
 } catch (err) {
-  // eslint-disable-next-line no-path-concat
-  console.error(__filename + ': V8 Binding failed to load');
+  console.error(`${__filename}: V8 Binding failed to load`);
   process.exit(0);
 }
 
 try {
   napi = require('./build/Release/napi_binding');
 } catch (err) {
-  // eslint-disable-next-line no-path-concat
-  console.error(__filename + ': NAPI-Binding failed to load');
+  console.error(`${__filename}: NAPI-Binding failed to load`);
   process.exit(0);
 }