deps: Add Conscrypt to shared-deps (#13838)

Author: lqiu96

sdk-platform-java/gapic-generator-java-pom-parent/pom.xml

@@ -41,6 +41,7 @@
     <mockito.version>4.11.0</mockito.version>
     <awaitility.version>4.3.0</awaitility.version>
     <slf4j.version>2.0.16</slf4j.version>
+    <conscrypt.version>2.6.0</conscrypt.version>
     <!--  skipping clirr check for protobuf 4.x upgrade -->
     <clirr.skip>true</clirr.skip>
     <ignoreNonCompile>true</ignoreNonCompile><!-- maven-dependency-plugin:analyze to skip test scope dependencies -->

sdk-platform-java/java-shared-dependencies/third-party-dependencies/pom.xml

@@ -273,6 +273,11 @@
         <artifactId>jspecify</artifactId>
         <version>${jspecify.version}</version>
       </dependency>
+      <dependency>
+        <groupId>org.conscrypt</groupId>
+        <artifactId>conscrypt-openjdk</artifactId>
+        <version>${conscrypt.version}</version>
+      </dependency>
       <dependency>
         <groupId>org.awaitility</groupId>
         <artifactId>awaitility</artifactId>