build(deps): bump com.mebigfatguy.sb-contrib:sb-contrib

Bumps [com.mebigfatguy.sb-contrib:sb-contrib](https://github.com/mebigfatguy/fb-contrib) from 7.6.3 to 7.6.4.
- [Commits](mebigfatguy/fb-contrib@v7.6.3...v7.6.4)

---
updated-dependencies:
- dependency-name: com.mebigfatguy.sb-contrib:sb-contrib
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

modules/SilkSpawners/pom.xml

@@ -309,7 +309,7 @@
             <plugin>
               <groupId>com.mebigfatguy.sb-contrib</groupId>
               <artifactId>sb-contrib</artifactId>
-              <version>7.6.3</version>
+              <version>7.6.4</version>
             </plugin>
           </plugins>
         </configuration>

pom.xml

@@ -117,7 +117,7 @@
             <plugin>
               <groupId>com.mebigfatguy.sb-contrib</groupId>
               <artifactId>sb-contrib</artifactId>
-              <version>7.6.3</version>
+              <version>7.6.4</version>
             </plugin>
           </plugins>
         </configuration>