Revert "Upgrade Spring Security Version (#100)" (#101)

This reverts commit 857f0b8.

pom.xml

@@ -11,7 +11,7 @@
   <artifactId>synopsys-security-scan</artifactId>
   <version>${revision}${changelist}</version>
   <packaging>hpi</packaging>
-  <name>Synopsys Security Scan</name>
+  <name>Synopsys Security Scan Plugin</name>
   <url>https://github.com/jenkinsci/${project.artifactId}-plugin</url>
   <licenses>
    <license>
@@ -49,21 +49,6 @@
   </dependencyManagement>
 
   <dependencies>
-    <dependency>
-      <groupId>org.springframework.security</groupId>
-      <artifactId>spring-security-web</artifactId>
-      <version>5.8.5</version>
-    </dependency>
-    <dependency>
-      <groupId>org.springframework.security</groupId>
-      <artifactId>spring-security-crypto</artifactId>
-      <version>5.8.5</version>
-    </dependency>
-    <dependency>
-      <groupId>org.springframework.security</groupId>
-      <artifactId>spring-security-core</artifactId>
-      <version>5.8.5</version>
-    </dependency>
     <dependency>
       <groupId>org.jenkins-ci.plugins</groupId>
       <artifactId>structs</artifactId>