Update CHANGELOG.md for Corretto 16.0.2.7.1

cr: https://code.amazon.com/reviews/CR-52509374

CHANGELOG.md

@@ -2,6 +2,36 @@
 
 The following sections describe the changes for each release of Amazon Corretto 16.
 
+## Corretto version: 16.0.2.7.1
+
+Release Date: July 20, 2021
+
+**Target Platforms**
+
++  RPM-based Linux using glibc 2.12 or later, x86, x86_64
++  Debian-based Linux using glibc 2.12 or later, x86, x86_64
++  RPM-based Linux using glibc 2.17 or later, aarch64
++  Debian-based Linux using glibc 2.17 or later, aarch64
++  Alpine-based Linux, x86_64
++  Windows 7 or later, x86_64
++  macOS 10.13 and later, x86_64
+
+The following issues are addressed in 16.0.2.7.1
+
+| Issue Name | Platform | Description | Link |
+| --- | --- | --- | --- |
+| Import jdk-16.0.2.7.1 | All | Updates Corretto baseline to OpenJDK 16.0.2+7 | [jdk-16.0.2+7](https://github.com/openjdk/jdk16u/releases/tag/jdk-16.0.2%2B7)
+| JDK-8266248 | macosx | Compilation failure in PLATFORM_API_MacOSX_MidiUtils.c with Xcode 12.5 | [JDK-8266248](https://bugs.openjdk.java.net/browse/JDK-8266248)
+
+The following CVEs are addressed in 16.0.2.7.1
+
+| CVE | CVSS | Component |
+| --- | --- | --- |
+| CVE-2021-2388 | 7.5 | hotspot/compiler
+| CVE-2021-2369 | 4.3 | security-libs/java.security
+| CVE-2021-2341 | 3.1 | core-libs/java.net
+
+
 ## Corretto version: 16.0.1.9.1
 
 Release Date: April 20, 2021