[SPARK-35210][BUILD] Upgrade Jetty to 9.4.40 to fix ERR_CONNECTION_RE…

…SET issue

### What changes were proposed in this pull request?

This PR proposes to upgrade Jetty to 9.4.40.

### Why are the changes needed?

SPARK-34988 (#32091) upgraded Jetty to 9.4.39 for CVE-2021-28165.
But after the upgrade, Jetty 9.4.40 was released to fix the ERR_CONNECTION_RESET issue (jetty/jetty.project#6152).
This issue seems to affect Jetty 9.4.39 when POST method is used with SSL.
For Spark, job submission using REST and ThriftServer with HTTPS protocol can be affected.

### Does this PR introduce _any_ user-facing change?

No. No released version uses Jetty 9.3.39.

### How was this patch tested?

CI.

Closes #32318 from sarutak/upgrade-jetty-9.4.40.

Authored-by: Kousuke Saruta <sarutak@oss.nttdata.com>
Signed-off-by: Kousuke Saruta <sarutak@oss.nttdata.com>

pom.xml

@@ -138,7 +138,7 @@
     <derby.version>10.14.2.0</derby.version>
     <parquet.version>1.12.0</parquet.version>
     <orc.version>1.6.7</orc.version>
-    <jetty.version>9.4.39.v20210325</jetty.version>
+    <jetty.version>9.4.40.v20210413</jetty.version>
     <jakartaservlet.version>4.0.3</jakartaservlet.version>
     <chill.version>0.9.5</chill.version>
     <ivy.version>2.4.0</ivy.version>