chore: patch SDK component and remove process.exit

.projenrc.ts

@@ -212,6 +212,7 @@ const repoProject = new yarn.Monorepo({
   defaultReleaseBranch: 'main',
   typescriptVersion: TYPESCRIPT_VERSION,
   devDeps: [
+    'patch-package',
     'cdklabs-projen-project-types',
     'glob',
     'semver',
@@ -287,6 +288,7 @@ const repoProject = new yarn.Monorepo({
     ],
   },
 });
+repoProject.package.setScript('postinstall', 'patch-package');
 
 new AdcPublishing(repoProject);
 new RecordPublishingTimestamp(repoProject);

packages/aws-cdk/lib/cli/cli.ts

@@ -734,15 +734,6 @@ export function cli(args: string[] = process.argv.slice(2)) {
       } catch (e: any) {
         await CliIoHost.get()?.asIoHelper().defaults.trace(`Ending Telemetry failed: ${e.message}`);
       }
-      /*
-       * The SDK may leave open handles in some environments. One case we have seen is
-       * MetadataService leaving an open socket in GitHub Actions. To ensure that
-       * the CLI exits in all environments, we explicitly call process.exit() after
-       * ending telemetry.
-       *
-       * See https://github.com/aws/aws-sdk-js-v3/issues/7538.
-       */
-      process.exit();
     });
 }
 /* c8 ignore stop */

patches/@aws-sdk+ec2-metadata-service+3.940.0.patch

@@ -0,0 +1,15 @@
+diff --git a/node_modules/@aws-sdk/ec2-metadata-service/dist-cjs/index.js b/node_modules/@aws-sdk/ec2-metadata-service/dist-cjs/index.js
+index 348a134..4be6050 100644
+--- a/node_modules/@aws-sdk/ec2-metadata-service/dist-cjs/index.js
++++ b/node_modules/@aws-sdk/ec2-metadata-service/dist-cjs/index.js
+@@ -116,6 +116,10 @@ class MetadataService {
+                 return utilStream.sdkStreamMixin(response.body).transformToString();
+             }
+             else {
++                if (response.body) {
++                    // Consume body
++                    utilStream.sdkStreamMixin(response.body).transformToString();
++                }
+                 throw new Error(`Failed to fetch metadata token with status code ${response.statusCode}`);
+             }
+         }