alpine: bump 3.12.4 for openssl security fixes

- CVE-2021-23841
- CVE-2021-23840
- CVE-2021-23839

library/alpine

@@ -25,10 +25,10 @@ s390x-Directory: s390x/
 i386-Directory: x86/
 amd64-Directory: x86_64/
 
-Tags: 3.12.3, 3.12
+Tags: 3.12.4, 3.12
 Architectures: arm64v8, arm32v6, arm32v7, ppc64le, s390x, i386, amd64
 GitFetch: refs/heads/v3.12
-GitCommit: 9f43992677cdb66a1ecbefe3bf409113b5f2127f
+GitCommit: 2f3c3015951938c521e752899a92ecd618e0c05b
 arm64v8-Directory: aarch64/
 arm32v6-Directory: armhf/
 arm32v7-Directory: armv7/