Update tomcat to 8.5.51

pom.xml

@@ -17,6 +17,7 @@
         <failOnDependencyWarning>true</failOnDependencyWarning>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <cxf.version>3.3.5</cxf.version>
+        <tomcat.version>8.5.51</tomcat.version>
     </properties>
 
     <repositories>
@@ -176,7 +177,46 @@
                 <groupId>javax.jws</groupId>
                 <artifactId>javax.jws-api</artifactId>
                 <version>1.1</version>
+              </dependency>
+
+            <!-- Tomcat dependencies are normally managed by Spring Boot, but we handle
+                 patch version updates ourselves in order to fix CVEs. -->
+            <dependency>
+                <groupId>org.apache.tomcat.embed</groupId>
+                <artifactId>tomcat-embed-core</artifactId>
+                <version>${tomcat.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>org.apache.tomcat.embed</groupId>
+                <artifactId>tomcat-embed-el</artifactId>
+                <version>${tomcat.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>org.apache.tomcat.embed</groupId>
+                <artifactId>tomcat-embed-jasper</artifactId>
+                <version>${tomcat.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>org.apache.tomcat.embed</groupId>
+                <artifactId>tomcat-embed-websocket</artifactId>
+                <version>${tomcat.version}</version>
             </dependency>
+            <dependency>
+                <groupId>org.apache.tomcat</groupId>
+                <artifactId>tomcat-annotations-api</artifactId>
+                <version>${tomcat.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>org.apache.tomcat</groupId>
+                <artifactId>tomcat-jdbc</artifactId>
+                <version>${tomcat.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>org.apache.tomcat</groupId>
+                <artifactId>tomcat-juli</artifactId>
+                <version>${tomcat.version}</version>
+            </dependency>
+
         </dependencies>
     </dependencyManagement>