package/rauc: security bump to version 1.5
Fixes the following security issue:
- CVE-2020-25860: Time-of-Check-Time-of-Use Vulnerability in code that
checks and installs a firmware bundle.
For more details, see the advisory:
https://github.com/rauc/rauc/security/advisories/GHSA-cgf3-h62j-w9vv
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>