Bump symbolic from 12.3.0 to 12.4.0 in /src/agent

Bumps [symbolic](https://github.com/getsentry/symbolic) from 12.3.0 to 12.4.0.
- [Release notes](https://github.com/getsentry/symbolic/releases)
- [Changelog](https://github.com/getsentry/symbolic/blob/master/CHANGELOG.md)
- [Commits](getsentry/symbolic@12.3.0...12.4.0)

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

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

Author: dependabot[bot]

src/agent/Cargo.lock

@@ -14,7 +14,7 @@ debuggable-module = { path = "../debuggable-module" }
 iced-x86 = "1.20"
 log = "0.4.17"
 regex = "1.9"
-symbolic = { version = "12.3", features = [
+symbolic = { version = "12.4", features = [
     "debuginfo",
     "demangle",
     "symcache",

src/agent/coverage/Cargo.toml

@@ -13,7 +13,7 @@ iced-x86 = "1.20"
 log = "0.4.17"
 pdb = "0.8.0"
 regex = "1.9"
-symbolic = { version = "12.3", features = [
+symbolic = { version = "12.4", features = [
     "debuginfo",
     "demangle",
     "symcache",