chore(stackable-operator): Revert and pin k8s-openapi to 0.26.0 (#1135)

* chore(stackable-operator): Revert and pin k8s-openapi to 0.26.0

Newer versions of k8s-openapi surface a schemars bug for optional quantities. See: kube-rs/kube#1869

See also kube-rs/kube#1885 (comment)

* chore: Update changelog

Author: NickLarsenNZ

Cargo.lock

@@ -23,19 +23,20 @@ darling = "0.23.0"
 delegate = "0.13.0"
 dockerfile-parser = "0.9.0"
 ecdsa = { version = "0.16.9", features = ["digest", "pem"] }
-educe =  { version = "0.6.0", default-features = false, features = ["Clone", "Debug", "Default", "PartialEq", "Eq"] }
+educe = { version = "0.6.0", default-features = false, features = ["Clone", "Debug", "Default", "PartialEq", "Eq"] }
 either = "1.13.0"
 futures = "0.3.30"
 futures-util = "0.3.30"
 http = "1.3.1"
 indexmap = "2.5.0"
 indoc = "2.0.6"
-insta = { version= "1.40", features = ["glob"] }
+insta = { version = "1.40", features = ["glob"] }
 hyper = { version = "1.4.1", features = ["full"] }
 hyper-util = "0.1.8"
 itertools = "0.14.0"
 json-patch = "4.0.0"
-k8s-openapi = { version = "0.26.0", default-features = false, features = ["schemars", "v1_34"] }
+# k8s-openapi 0.26.1 doesn't play well with our kube version: https://github.com/kube-rs/kube/issues/1869
+k8s-openapi = { version = "=0.26.0", default-features = false, features = ["schemars", "v1_34"] }
 # We use rustls instead of openssl for easier portability, e.g. so that we can build stackablectl without the need to vendor (build from source) openssl
 # We use ring instead of aws-lc-rs, as this currently fails to build in "make run-dev"
 # We pin the kube version, as we use a patch for 2.0.1

Cargo.toml

@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
 
+### Changed
+
+- Revert and pin k8s-openapi to 0.26.0 ([#1135]).
+
+[#1135]: https://github.com/stackabletech/operator-rs/pull/1135
+
 ## [0.101.2] - 2026-01-07
 
 ### Changed