Update changelog and version for 15.0.2.7.1

cr https://code.amazon.com/reviews/CR-42902795

CHANGELOG.md

@@ -2,6 +2,32 @@
 
 The following sections describe the changes for each release of Amazon Corretto 15.
 
+## January 2021 critical patch update: Corretto version 15.0.2.7.1
+
+Release Date: January xx, 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 15.0.2.7.1
+
+ | Issue Name | Platform | Description | Link |
+ | --- | --- | --- | --- |
+ | Import jdk-15.0.2+7 | all |  Updates Corretto baseline to OpenJDK 15.0.2+7 | [jdk-15.0.2+7](https://github.com/openjdk/jdk15u/commit/03fb8436dc5f86be1a9633658d6295b9dc04fa0e) |
+ | OSX build fails with Xcode 12.0 (12A7209) | os_x | see following link for detail | [JDK-8253375](https://bugs.openjdk.java.net/browse/JDK-8253375) |
+ | libTestMainKeyWindow fails to build with Xcode 12.2  |  os_x  | see following link for detail  | [JDK-8256501](https://bugs.openjdk.java.net/browse/JDK-8256501) |
+ | Issue with useAppleColor check in CSystemColors.m | os_x | see following link for detail | [JDK-8253791](https://bugs.openjdk.java.net/browse/JDK-8253791) |
+ | Shenandoah: "adaptive" heuristic is prone to missing load spikes | all | see following link for detail | [JDK-8255984](https://bugs.openjdk.java.net/browse/JDK-8255984) |
+
+This version addresses a number of vulnerabilities that do not have an associated CVE.
+
 ## October 2020 critical patch update: Corretto version 15.0.1.9.1
 
 Release Date: October 20, 2020

version.txt

@@ -1 +1 @@
-15.0.1.9.1
+15.0.2.7.1