chore(deps): bump github.com/invopop/jsonschema in /backend

Bumps [github.com/invopop/jsonschema](https://github.com/invopop/jsonschema) from 0.11.0 to 0.12.0.
- [Commits](invopop/jsonschema@v0.11.0...v0.12.0)

---
updated-dependencies:
- dependency-name: github.com/invopop/jsonschema
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

backend/go.mod

@@ -16,7 +16,7 @@ require (
 	github.com/gofrs/uuid v4.4.0+incompatible
 	github.com/gomodule/redigo v1.8.9
 	github.com/h2non/gock v1.2.0
-	github.com/invopop/jsonschema v0.11.0
+	github.com/invopop/jsonschema v0.12.0
 	github.com/jackc/pgconn v1.14.1
 	github.com/kelseyhightower/envconfig v1.4.0
 	github.com/knadh/koanf v1.5.0

backend/go.sum

@@ -283,8 +283,8 @@ github.com/imdario/mergo v0.3.13/go.mod h1:4lJ1jqUDcsbIECGy0RUJAXNIhg+6ocWgb1ALK
 github.com/inconshreveable/mousetrap v1.0.1/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
 github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
 github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
-github.com/invopop/jsonschema v0.11.0 h1:tdAVvos5ttrsYLyEuVymkVVK31EFpwnTu5hWiyYLGWA=
-github.com/invopop/jsonschema v0.11.0/go.mod h1:ffZ5Km5SWWRAIN6wbDXItl95euhFz2uON45H2qjYt+0=
+github.com/invopop/jsonschema v0.12.0 h1:6ovsNSuvn9wEQVOyc72aycBMVQFKz7cPdMJn10CvzRI=
+github.com/invopop/jsonschema v0.12.0/go.mod h1:ffZ5Km5SWWRAIN6wbDXItl95euhFz2uON45H2qjYt+0=
 github.com/jackc/chunkreader v1.0.0/go.mod h1:RT6O25fNZIuasFJRyZ4R/Y2BbhasbmZXF9QQ7T3kePo=
 github.com/jackc/chunkreader/v2 v2.0.0/go.mod h1:odVSm741yZoC3dpHEUXIqA9tQRhFrgOHwnPIn9lDKlk=
 github.com/jackc/chunkreader/v2 v2.0.1 h1:i+RDz65UE+mmpjTfyz0MoVTnzeYxroil2G82ki7MGG8=