Remove jspecify dependency from core module

This is actually a transitive dependency from
spring-context -> spring-core.

Author: fmbenhassine

pom.xml

@@ -54,7 +54,6 @@
 		<antlr-st4.version>4.3.4</antlr-st4.version>
 		<hibernate-validator.version>9.0.1.Final</hibernate-validator.version>
 		<jakarta.el.version>4.0.2</jakarta.el.version>
-		<jspecify.version>1.0.0</jspecify.version>
 
 		<!-- test dependencies -->
 		<jimfs.version>1.3.1</jimfs.version>

spring-shell-core/pom.xml

@@ -46,11 +46,6 @@
 			<artifactId>jakarta.el</artifactId>
 			<version>${jakarta.el.version}</version>
 		</dependency>
-		<dependency>
-			<groupId>org.jspecify</groupId>
-			<artifactId>jspecify</artifactId>
-			<version>${jspecify.version}</version>
-		</dependency>
 
 		<!-- Test dependencies -->
 		<dependency>