build(deps-dev): Bump jcasc.version from 1.51 to 1.55.1 (#322)

* build(deps-dev): Bump jcasc.version from 1.51 to 1.55.1

Bumps `jcasc.version` from 1.51 to 1.55.1.

Updates `configuration-as-code` from 1.51 to 1.55.1
- [Release notes](https://github.com/jenkinsci/configuration-as-code-plugin/releases)
- [Commits](jenkinsci/configuration-as-code-plugin@configuration-as-code-1.51...configuration-as-code-1.55.1)

Updates `test-harness` from 1.51 to 1.55.1
- [Release notes](https://github.com/jenkinsci/configuration-as-code-plugin/releases)
- [Commits](jenkinsci/configuration-as-code-plugin@configuration-as-code-1.51...configuration-as-code-1.55.1)

---
updated-dependencies:
- dependency-name: io.jenkins:configuration-as-code
  dependency-type: direct:development
  update-type: version-update:semver-minor
- dependency-name: io.jenkins.configuration-as-code:test-harness
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

* Update plugin bom dependency to resolve the conflict version issue

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Clarck Robinson <[email protected]>

Author: dependabot[bot]

pom.xml

@@ -5,7 +5,7 @@
   <parent>
     <groupId>org.jenkins-ci.plugins</groupId>
     <artifactId>plugin</artifactId>
-    <version>4.19</version>
+    <version>4.33</version>
     <relativePath />
   </parent>
   <artifactId>tuleap-git-branch-source</artifactId>
@@ -17,7 +17,7 @@
     <java.level>8</java.level>
     <maven.javadoc.skip>true</maven.javadoc.skip> <!-- we don't like documentation -->
     <hpi.compatibleSinceVersion>2.0.0</hpi.compatibleSinceVersion>
-    <jcasc.version>1.51</jcasc.version>
+    <jcasc.version>1.55.1</jcasc.version>
   </properties>
 
   <name>Tuleap Git Branch Source Plugin</name>
@@ -147,16 +147,6 @@
       <artifactId>test-harness</artifactId>
       <version>${jcasc.version}</version>
       <scope>test</scope>
-      <exclusions>
-        <exclusion>
-          <groupId>com.fasterxml.jackson.core</groupId>
-          <artifactId>jackson-databind</artifactId>
-        </exclusion>
-        <exclusion>
-          <groupId>com.fasterxml.jackson.core</groupId>
-          <artifactId>jackson-core</artifactId>
-        </exclusion>
-      </exclusions>
     </dependency>
     <dependency>
       <groupId>org.hamcrest</groupId>