Update SpringBoot when approved version has Log4J 2.17.1 or higher

-Updated cps-dependencies/pom.xml SpringBoot to v2.6.4
-Updated cps-parent/pom.xml springboot maven to v2.6.4
-Updated spring cloud dependencies to 2021.0.1

Issue-ID: CPS-958
Change-Id: I37aca89edf6da83501414b4f202d3bb88464c801
Signed-off-by: JosephKeenan <joseph.keenan@est.tech>
diff --git a/cps-dependencies/pom.xml b/cps-dependencies/pom.xml
index 0f33e03..1de07c3 100755
--- a/cps-dependencies/pom.xml
+++ b/cps-dependencies/pom.xml
@@ -66,14 +66,14 @@
             <dependency>
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-dependencies</artifactId>
-                <version>2.5.5</version>
+                <version>2.6.4</version>
                 <type>pom</type>
                 <scope>import</scope>
             </dependency>
             <dependency>
                 <groupId>org.springframework.cloud</groupId>
                 <artifactId>spring-cloud-dependencies</artifactId>
-                <version>2020.0.2</version>
+                <version>2021.0.1</version>
                 <type>pom</type>
                 <scope>import</scope>
             </dependency>
@@ -181,16 +181,6 @@
                 <scope>test</scope>
             </dependency>
             <dependency>
-                <groupId>org.apache.logging.log4j</groupId>
-                <artifactId>log4j-api</artifactId>
-                <version>2.17.2</version>
-            </dependency>
-            <dependency>
-                <groupId>org.apache.logging.log4j</groupId>
-                <artifactId>log4j-to-slf4j</artifactId>
-                <version>2.17.2</version>
-            </dependency>
-            <dependency>
                 <groupId>org.mapstruct</groupId>
                 <artifactId>mapstruct</artifactId>
                 <version>${mapstruct.version}</version>