Add deprecation note for Jackson properties.

This commit adds metadata for spring.jackson.generator and
spring.jackson.parser to hint at a partial replacement.

Closes gh-47778

Author: snicoll

module/spring-boot-jackson/src/main/resources/META-INF/additional-spring-configuration-metadata.json

@@ -8,6 +8,13 @@
       "name": "spring.jackson.datatype.enum",
       "description": "Jackson on/off features for enums."
     },
+    {
+      "name": "spring.jackson.generator",
+      "deprecation": {
+        "level": "error",
+        "reason": "Partially replaced by 'spring.jackson.json.read'."
+      }
+    },
     {
       "name": "spring.jackson.joda-date-time-format",
       "type": "java.lang.String",
@@ -16,6 +23,13 @@
         "level": "error"
       }
     },
+    {
+      "name": "spring.jackson.parser",
+      "deprecation": {
+        "level": "error",
+        "reason": "Partially replaced by 'spring.jackson.json.write'."
+      }
+    },
     {
       "name": "spring.jackson.read",
       "type": "java.util.Map<tools.jackson.core.json.JsonReadFeature,java.lang.Boolean>",