* [maven-release-plugin] prepare release v9.4.0

* [maven-release-plugin] prepare for next development iteration

* Update change logs.

---------

Co-authored-by: Wu Sheng <“wu.sheng@foxmail.com”>

…inpool-plugin (#753)

HikariCP pool can be configured using JDBC URL:
```
HikariConfig config = new HikariConfig();
config.setJdbcUrl("jdbc:mysql://localhost:3306/simpsons");
```
or using data source properties
```
Properties props = new Properties();
props.setProperty("dataSourceClassName", "org.postgresql.ds.PGSimpleDataSource");
props.setProperty("dataSource.serverName", "localhost");
...
HikariConfig config = new HikariConfig(props);
HikariDataSource ds = new HikariDataSource(config)
```

* [Feature] Add URLParser for dameng(DM)

…34) (#759)

Signed-off-by: ayue <ericyu0421@163.com>

Root cause, grpc/grpc-java@050ae18 made changes to AbstractServerImplBuilder, which causes a functional issue with the gRPC tracing plugin.

Root cause:
SkyWalking's enhancement changes how Spring decides which proxy type to use. As mentioned in [#13221](apache/skywalking#13221 (comment)), SkyWalking modifies Spring's `hasNoUserSuppliedProxyInterfaces()` to avoid affecting the choice of proxy type. But once Spring Retry has added `Retryable` to the list of interfaces, `hasNoUserSuppliedProxyInterfaces()` will find a user-supplied interface and return false, which changes the proxy type and leads to a startup failure.

Starting in 4.0.2.RELEASE, Spring adds a new hook method `evaluateProxyInterfaces()`, which allows proxy-related flags (like proxyTargetClass) to be determined earlier in the lifecycle. We also need to enhance `evaluateProxyInterfaces()` (and its related callbacks) so that SkyWalking's EnhancedInstance interface is always ignored.

- checkstyle's parameter encoding is deprecated since commit
(apache/maven-checkstyle-plugin@627fa4f).
- use inputEncoding instead of encoding

fix build failure:

```
[ERROR] Failed to execute goal
org.apache.maven.plugins:maven-compiler-plugin:3.10.1:compile
(default-compile) on project apm-agent-core: Compilation failure:
Compilation failure:
[ERROR] /opt/code/git/skywalking-java/apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/context/trace/TraceSegmentRef.java:[51,31]
cannot find symbol
[ERROR]   symbol:   method getTraceId()
```

Build: Update Maven Plugin Versions and Remove Redundant Declarations  

• Removed redundant version declarations across modules  for `netty` and `junit`
• Remove duplicate artifactId declarations `jmh-generator-annprocess` in `apm-sniffer/apm-agent-core/pom.xml`
• Centralized plugin (`maven-shade-plugin` and `maven-surefire-plugin` ) version management in the root POM 
• Centralized `netty` version management in the root POM by add `netty-bom`
• (fix)Declare property `maven-docker-plugin.version`