databases/redis70: update to 7.0.15 with fix CVE-2023-41056

Security fixes:

• (CVE-2023-41056) In some cases, Redis may incorrectly handle resizing of memory buffers which can result in incorrect accounting of buffer sizes and lead to heap overflow and potential remote code execution.

Changelog: https://github.com/redis/redis/releases/tag/7.0.15

PR: 276255
Approved by: yasu (maintainer, timeout > 14 days), arrowd (mentor)
MFH: 2024Q1

(cherry picked from commit 5c3342ecd87633f163ac3410dd8cb2809c74d623)