update: bump der from 0.7.10 to 0.8.0

Bumps [der](https://github.com/RustCrypto/formats) from 0.7.10 to 0.8.0.
- [Commits](RustCrypto/formats@der/v0.7.10...der/v0.8.0)

---
updated-dependencies:
- dependency-name: der
  dependency-version: 0.8.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Cargo.lock

@@ -109,7 +109,7 @@ config = { version = "0.14.0", default-features = false, features = [
 const-hex = "1.14"
 const-oid = { version = "0.9.6", optional = true }
 coset = "0.4.0"
-der = { version = "0.7.9", features = ["alloc"] }
+der = { version = "0.8.0", features = ["alloc"] }
 extfmt = "0.2.0"
 getrandom = { version = "0.3.4", default-features = false, features = ["std"] }
 ecdsa = { version = "0.16.9", features = ["digest", "sha2"], optional = true }