deps: update dependency io.prometheus:simpleclient_httpserver to v0.16.0 (#3723)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [io.prometheus:simpleclient_httpserver](https://togithub.com/prometheus/client_java) | `0.3.0` -> `0.16.0` | [![age](https://badges.renovateapi.com/packages/maven/io.prometheus:simpleclient_httpserver/0.16.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/io.prometheus:simpleclient_httpserver/0.16.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/io.prometheus:simpleclient_httpserver/0.16.0/compatibility-slim/0.3.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/io.prometheus:simpleclient_httpserver/0.16.0/confidence-slim/0.3.0)](https://docs.renovatebot.com/merge-confidence/) |

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Author: renovate-bot

hbase-migration-tools/mirroring-client/bigtable-hbase-mirroring-client-1.x-parent/bigtable-hbase-mirroring-client-1.x-integration-tests/pom.xml

@@ -278,7 +278,7 @@ limitations under the License.
     <dependency>
       <groupId>io.prometheus</groupId>
       <artifactId>simpleclient_httpserver</artifactId>
-      <version>0.3.0</version>
+      <version>0.16.0</version>
     </dependency>
 
     <!-- Testing deps -->

hbase-migration-tools/mirroring-client/bigtable-hbase-mirroring-client-2.x-parent/bigtable-hbase-mirroring-client-1.x-2.x-integration-tests/pom.xml

@@ -269,7 +269,7 @@ limitations under the License.
     <dependency>
       <groupId>io.prometheus</groupId>
       <artifactId>simpleclient_httpserver</artifactId>
-      <version>0.3.0</version>
+      <version>0.16.0</version>
     </dependency>
 
     <!-- Testing deps -->

hbase-migration-tools/mirroring-client/bigtable-hbase-mirroring-client-2.x-parent/bigtable-hbase-mirroring-client-2.x-integration-tests/pom.xml

@@ -274,7 +274,7 @@ limitations under the License.
     <dependency>
       <groupId>io.prometheus</groupId>
       <artifactId>simpleclient_httpserver</artifactId>
-      <version>0.3.0</version>
+      <version>0.16.0</version>
     </dependency>
 
     <!-- Testing deps -->