[Wolfi Package Update]: prometheus-blackbox-exporer

### Package name prometheus-blackbox-exporer ### Current version in Wolfi 0.25.0 ### Requested version 0.28.0 ### Upstream project URL https://github.com/prometheus/blackbox_exporter ### Problem No new package version since 0.25.0, the latest as of now is 0.28.09 ### Steps to reproduce _No response_ ### Root cause (if known) _No response_ ### Proposed solution _No response_ ### Testing performed _No response_ ### Acceptance criteria - [x] The requested version is the **latest stable upstream release** (no pre-releases or RCs) - [x] The upstream project uses an **OSI-approved license** - [x] The change aligns with Wolfi’s packaging and security model - [x] The package can be reasonably maintained over time - [x] There are no known unresolved security or supply-chain concerns