fix exporting env vars on linux

src/runner.ts

@@ -138,7 +138,8 @@ program
           // Assume that anything that's not windows is using a unix-style shell
           const envFile = path.join(config.tempDir, 'codeql-env.sh');
           const envFileContents = Object.entries(tracerConfig.env)
-            .map(([key, value]) => `${key}="${value}"`)
+            // Some vars contain ${LIB} that we do not want to be expanded when executing this script
+            .map(([key, value]) => `export ${key}="${value.replace('$', '\\$')}"`)
             .join('\n');
           fs.writeFileSync(envFile, envFileContents);