ci: explicitly deny unmaintained, yanked, and unlicensed crates per review

Author: jpoehnelt-bot

deny.toml

@@ -14,10 +14,15 @@ targets = [
 
 # Advisories — checks for known vulnerable crate versions
 [advisories]
+vulnerability = "deny"
+unmaintained = "warn"
+yanked = "deny"
+ignore = []
 db-urls = ["https://github.com/rustsec/advisory-db"]
 
 # Licenses — allowlist of acceptable licenses
 [licenses]
+unlicensed = "deny"
 allow = [
     "Apache-2.0",
     "Apache-2.0 WITH LLVM-exception",