Update backend dependencies

Author: Degubi

backend/pom.xml

@@ -9,12 +9,12 @@
         <dependency>
 		    <groupId>org.springframework.boot</groupId>
 		    <artifactId>spring-boot-starter-data-mongodb</artifactId>
-		    <version>2.6.5</version>
+		    <version>2.6.7</version>
 		</dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
-            <version>2.6.5</version>
+            <version>2.6.7</version>
         </dependency>
     </dependencies>
 
@@ -30,7 +30,7 @@
             <plugin>
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-maven-plugin</artifactId>
-                <version>2.6.5</version>
+                <version>2.6.7</version>
                 <executions>
                     <execution>
                         <goals>