build(pom): manage jackson via jackson-bom 2.18.9 per easy4j-deploy spec (cleanup hardcoded versions)

Author: loong10k

pom.xml

@@ -61,7 +61,7 @@
         <!-- Dependency versions -->
         <commons-exec.version>1.4.0</commons-exec.version>
         <commons-lang.version>2.6</commons-lang.version>
-        <jackson.version>2.18.9</jackson.version>
+        <jackson-bom.version>2.18.9</jackson-bom.version>
         <junit-jupiter.version>5.11.4</junit-jupiter.version>
         <junit.version>4.13.2</junit.version>
         <lombok.version>1.18.46</lombok.version>
@@ -90,19 +90,19 @@
     <!-- 依赖版本统一管理（dependencyManagement） -->
     <dependencyManagement>
         <dependencies>
-            <dependency>
-                <groupId>io.github.easy4j</groupId>
-                <artifactId>okhttp3-extension</artifactId>
-                <version>${okhttp3-extension.version}</version>
-            </dependency>
             <!-- For Jackson BOM -->
             <dependency>
                 <groupId>com.fasterxml.jackson</groupId>
                 <artifactId>jackson-bom</artifactId>
-                <version>${jackson.version}</version>
+                <version>${jackson-bom.version}</version>
                 <type>pom</type>
                 <scope>import</scope>
             </dependency>
+            <dependency>
+                <groupId>io.github.easy4j</groupId>
+                <artifactId>okhttp3-extension</artifactId>
+                <version>${okhttp3-extension.version}</version>
+            </dependency>
             <!-- For OkHttp BOM -->
             <dependency>
                 <groupId>com.squareup.okhttp3</groupId>
@@ -145,11 +145,6 @@
                 <groupId>com.squareup.okhttp3</groupId>
                 <artifactId>okhttp-sse</artifactId>
             <version>${okhttp.version}</version></dependency>
-            <!-- For Jackson -->
-            <dependency>
-                <groupId>com.fasterxml.jackson.core</groupId>
-                <artifactId>jackson-databind</artifactId>
-            <version>${jackson.version}</version></dependency>
             <!-- https://mvnrepository.com/artifact/com.squareup.okhttp3/mockwebserver -->
             <dependency>
                 <groupId>com.squareup.okhttp3</groupId>