chore(deps): bump flagset from 0.4.3 to 0.4.4 (#1215)

Bumps [flagset](https://github.com/enarx/flagset) from 0.4.3 to 0.4.4.
- [Commits](enarx/flagset@v0.4.3...v0.4.4)

---
updated-dependencies:
- dependency-name: flagset
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

der/Cargo.toml

@@ -20,7 +20,7 @@ arbitrary = { version = "1.3", features = ["derive"], optional = true }
 bytes = { version = "1", optional = true, default-features = false }
 const-oid = { version = "0.9.2", optional = true }
 der_derive = { version = "0.7.2", optional = true }
-flagset = { version = "0.4.3", optional = true }
+flagset = { version = "0.4.4", optional = true }
 pem-rfc7468 = { version = "0.7", optional = true, features = ["alloc"] }
 time = { version = "0.3.4", optional = true, default-features = false }
 zeroize = { version = "1.5", optional = true, default-features = false }