set exit code on verify failure

Author: kanej

v-next/hardhat-ignition/src/internal/tasks/verify.ts

@@ -89,6 +89,7 @@ export async function verify(
         ensureError(error);
 
         console.error(chalk.red(error.message));
+        process.exitCode = 1;
       }
     }
   }

v-next/hardhat-ignition/test/tasks/verify.ts

@@ -27,6 +27,8 @@ describe("ignition verify task", () => {
     consoleLogStub.restore();
     consoleWarnStub.restore();
     consoleErrorStub.restore();
+
+    process.exitCode = undefined;
   });
 
   const exampleVerifyInfo: VerifyResult = {
@@ -67,6 +69,8 @@ describe("ignition verify task", () => {
     assert.include(verifyCallsByProvider, "etherscan");
     assert.include(verifyCallsByProvider, "blockscout");
     assert.include(verifyCallsByProvider, "sourcify");
+
+    assert.equal(process.exitCode, undefined);
   });
 
   it("should continue verification on other providers when one fails", async function () {
@@ -102,6 +106,8 @@ describe("ignition verify task", () => {
     assert.include(verifyCallsByProvider, "etherscan");
     assert.include(verifyCallsByProvider, "blockscout");
     assert.include(verifyCallsByProvider, "sourcify");
+
+    assert.equal(process.exitCode, 1);
   });
 
   it("should not verify when no providers are enabled", async function () {