Bump symbolic from 8.6.0 to 8.8.0 in /src/agent

Bumps [symbolic](https://github.com/getsentry/symbolic) from 8.6.0 to 8.8.0.
- [Release notes](https://github.com/getsentry/symbolic/releases)
- [Changelog](https://github.com/getsentry/symbolic/blob/master/CHANGELOG.md)
- [Commits](getsentry/symbolic@8.6.0...8.8.0)

---
updated-dependencies:
- dependency-name: symbolic
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

src/agent/coverage/Cargo.toml

@@ -24,7 +24,7 @@ msvc-demangler = "0.9"
 regex = "1.5.5"
 rustc-demangle = "0.1"
 serde = { version = "1.0", features = ["derive"] }
-symbolic = { version = "8.6", features = ["debuginfo", "demangle", "symcache"] }
+symbolic = { version = "8.8", features = ["debuginfo", "demangle", "symcache"] }
 uuid = { version = "0.8", features = ["guid"] }
 win-util = { path = "../win-util" }
 xml-rs = "0.8"