chore(deps): bump the regular-updates group across 1 directory with 4 updates

Bumps the regular-updates group with 4 updates in the /cdk directory: [ca-cdk-constructs](https://github.com/citizensadvice/ca-cdk-constructs), [ca-cdk8s-constructs](https://github.com/citizensadvice/ca-cdk8s-constructs), [ruff](https://github.com/astral-sh/ruff) and [cdk8s-plus-32](https://github.com/cdk8s-team/cdk8s-plus).


Updates `ca-cdk-constructs` from 0.17.4 to 0.18.0
- [Release notes](https://github.com/citizensadvice/ca-cdk-constructs/releases)
- [Commits](citizensadvice/ca-cdk-constructs@v0.17.4...v0.18.0)

Updates `ca-cdk8s-constructs` from 5.1.0 to 5.1.1
- [Release notes](https://github.com/citizensadvice/ca-cdk8s-constructs/releases)
- [Commits](citizensadvice/ca-cdk8s-constructs@v5.1.0...v5.1.1)

Updates `ruff` from 0.15.14 to 0.15.22
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/0.15.22/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.15.14...0.15.22)

Updates `cdk8s-plus-32` from 2.5.63 to 2.5.84
- [Release notes](https://github.com/cdk8s-team/cdk8s-plus/releases)
- [Commits](cdk8s-team/cdk8s-plus@cdk8s-plus-32/v2.5.63...cdk8s-plus-32/v2.5.84)

---
updated-dependencies:
- dependency-name: ca-cdk-constructs
  dependency-version: 0.18.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: regular-updates
- dependency-name: ca-cdk8s-constructs
  dependency-version: 5.1.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: regular-updates
- dependency-name: cdk8s-plus-32
  dependency-version: 2.5.82
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: regular-updates
- dependency-name: ruff
  dependency-version: 0.15.21
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: regular-updates
...

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

Author: dependabot[bot]

cdk/poetry.lock

@@ -8,7 +8,7 @@ package-mode = false
 
 [tool.poetry.dependencies]
 python = ">=3.10,<3.15"
-ca-cdk-constructs = "^0.17.3"
+ca-cdk-constructs = ">=0.17.3,<0.19.0"
 ca-cdk8s-constructs = "^5.0.1"
 ruff = "^0.15.8"
 cdk8s-plus-32 = "^2.5.42"