deps: bump pulldown-cmark from 0.13.1 to 0.13.3

Bumps [pulldown-cmark](https://github.com/raphlinus/pulldown-cmark) from 0.13.1 to 0.13.3.
- [Release notes](https://github.com/raphlinus/pulldown-cmark/releases)
- [Commits](https://github.com/raphlinus/pulldown-cmark/compare/v0.13.1...v0.13.3)

---
updated-dependencies:
- dependency-name: pulldown-cmark
  dependency-version: 0.13.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Cargo.lock

@@ -2437,9 +2437,9 @@ dependencies = [
 
 [[package]]
 name = "pulldown-cmark"
-version = "0.13.1"
+version = "0.13.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "83c41efbf8f90ac44de7f3a868f0867851d261b56291732d0cbf7cceaaeb55a6"
+checksum = "7c3a14896dfa883796f1cb410461aef38810ea05f2b2c33c5aded3649095fdad"
 dependencies = [
  "bitflags",
  "getopts",