fix: Ignore RUSTSEC-2026-0173 for now

Author: Techassi

deny.toml

@@ -14,6 +14,20 @@ targets = [
 
 [advisories]
 yanked = "deny"
+ignore = [
+  # https://rustsec.org/advisories/RUSTSEC-2026-0173
+  # The author of `proc-macro-error2` has [confirmed](https://github.com/GnomedDev/proc-macro-error-2/issues/17#issuecomment-4643215473)
+  # that the crate is no longer maintained and recommends that users migrate away from it.
+  #
+  # There currently is no way for us to negate this advisory, because that crate is not used
+  # directly by us. We need to wait for new versions of oci-spec and getset.
+  #
+  # proc-macro-error2 v2.0.1
+  #  └── getset v0.1.6
+  #      └── oci-spec v0.9.0
+  #          └── boil v0.2.1
+  "RUSTSEC-2026-0173",
+]
 
 [bans]
 multiple-versions = "allow"
@@ -31,7 +45,7 @@ allow = [
   "LicenseRef-webpki",
   "MIT",
   "MPL-2.0",
-  "OpenSSL",           # Needed for the ring and/or aws-lc-sys crate. See https://github.com/stackabletech/operator-templating/pull/464 for details
+  "OpenSSL", # Needed for the ring and/or aws-lc-sys crate. See https://github.com/stackabletech/operator-templating/pull/464 for details
   "Unicode-3.0",
   "Unicode-DFS-2016",
   "Zlib",