Fix Layout/LineLength offense in pnpm_lockfile_updater_spec

Author: ivnnv

npm_and_yarn/spec/dependabot/npm_and_yarn/file_updater/pnpm_lockfile_updater_spec.rb

@@ -773,7 +773,8 @@
           expect(Dependabot::NpmAndYarn::Helpers).to receive(:run_pnpm_command)
             .with(
               "-r --include-workspace-root update prettier --depth Infinity --lockfile-only --no-save",
-              { fingerprint: "-r --include-workspace-root update <dependency_name> --depth Infinity --lockfile-only --no-save" }
+              { fingerprint: "-r --include-workspace-root update <dependency_name> " \
+                             "--depth Infinity --lockfile-only --no-save" }
             )
             .ordered
             .and_return("")