build(deps): bump der from 0.7.3 to 0.7.4 (#714)

Bumps [der](https://github.com/RustCrypto/formats) from 0.7.3 to 0.7.4.
- [Release notes](https://github.com/RustCrypto/formats/releases)
- [Commits](https://github.com/RustCrypto/formats/compare/der/v0.7.3...der/v0.7.4)

---
updated-dependencies:
- dependency-name: der
  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>

Cargo.lock

@@ -116,9 +116,9 @@ dependencies = [
 
 [[package]]
 name = "der"
-version = "0.7.3"
+version = "0.7.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "82b10af9f9f9f2134a42d3f8aa74658660f2e0234b0eb81bd171df8aa32779ed"
+checksum = "86b14af2045fa69ed2b7a48934bebb842d0f33e73e96e78766ecb14bb5347a11"
 dependencies = [
  "const-oid",
  "pem-rfc7468",