Bump the dependencies group with 3 updates

Bumps the dependencies group with 3 updates: io.helidon.webserver:helidon-webserver, [com.fasterxml.jackson.core:jackson-core](https://github.com/FasterXML/jackson-core) and [org.springframework.boot:spring-boot-dependencies](https://github.com/spring-projects/spring-boot).


Updates `io.helidon.webserver:helidon-webserver` from 4.2.0 to 4.2.1

Updates `com.fasterxml.jackson.core:jackson-core` from 2.18.3 to 2.19.0
- [Commits](FasterXML/jackson-core@jackson-core-2.18.3...jackson-core-2.19.0)

Updates `org.springframework.boot:spring-boot-dependencies` from 3.4.4 to 3.4.5
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v3.4.4...v3.4.5)

---
updated-dependencies:
- dependency-name: io.helidon.webserver:helidon-webserver
  dependency-version: 4.2.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: dependencies
- dependency-name: com.fasterxml.jackson.core:jackson-core
  dependency-version: 2.19.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dependencies
- dependency-name: org.springframework.boot:spring-boot-dependencies
  dependency-version: 3.4.5
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: dependencies
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

json-core/pom.xml

@@ -17,7 +17,7 @@
     <dependency>
       <groupId>io.helidon.webserver</groupId>
       <artifactId>helidon-webserver</artifactId>
-      <version>4.2.0</version>
+      <version>4.2.1</version>
       <scope>provided</scope>
       <optional>true</optional>
     </dependency>

jsonb-jackson/pom.xml

@@ -16,7 +16,7 @@
     <dependency>
       <groupId>com.fasterxml.jackson.core</groupId>
       <artifactId>jackson-core</artifactId>
-      <version>2.18.3</version>
+      <version>2.19.0</version>
     </dependency>
     <dependency>
       <groupId>io.avaje</groupId>

jsonb-spring-adapter/pom.xml

@@ -18,7 +18,7 @@
       <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-dependencies</artifactId>
-        <version>3.4.4</version>
+        <version>3.4.5</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>