fix(deps): update module github.com/fluxcd/source-controller/api to v1.7.3 (#150)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

go.mod

@@ -7,7 +7,7 @@ replace github.com/kcp-dev/multicluster-provider v0.2.0 => github.com/kcp-dev/mu
 require (
 	github.com/coreos/go-oidc v2.4.0+incompatible
 	github.com/fluxcd/helm-controller/api v1.4.2
-	github.com/fluxcd/source-controller/api v1.7.2
+	github.com/fluxcd/source-controller/api v1.7.3
 	github.com/go-logr/logr v1.4.3
 	github.com/google/gnostic-models v0.7.0
 	github.com/kcp-dev/kcp/sdk v0.28.1-0.20250926104223-cec2e15f24c6

go.sum

@@ -38,8 +38,8 @@ github.com/fluxcd/pkg/apis/kustomize v1.13.0 h1:GGf0UBVRIku+gebY944icVeEIhyg1P/K
 github.com/fluxcd/pkg/apis/kustomize v1.13.0/go.mod h1:TLKVqbtnzkhDuhWnAsN35977HvRfIjs+lgMuNro/LEc=
 github.com/fluxcd/pkg/apis/meta v1.22.0 h1:EHWQH5ZWml7i8eZ/AMjm1jxid3j/PQ31p+hIwCt6crM=
 github.com/fluxcd/pkg/apis/meta v1.22.0/go.mod h1:Kc1+bWe5p0doROzuV9XiTfV/oL3ddsemYXt8ZYWdVVg=
-github.com/fluxcd/source-controller/api v1.7.2 h1:/lg/xoyRjxwdhHKqjTxQS2o1cp+DMKJ8W4rpm+ZLemQ=
-github.com/fluxcd/source-controller/api v1.7.2/go.mod h1:2JtCeUVpl0aqKImS19jUz9EEnMdzgqNWHkllrIhV004=
+github.com/fluxcd/source-controller/api v1.7.3 h1:JCDbaJqAbQtjCt3Ijsm/6nZf+SZiby3/R6lVZ1gDllE=
+github.com/fluxcd/source-controller/api v1.7.3/go.mod h1:2JtCeUVpl0aqKImS19jUz9EEnMdzgqNWHkllrIhV004=
 github.com/frankban/quicktest v1.14.6 h1:7Xjx+VpznH+oBnejlPUj8oUpdxnVs4f8XU8WnHkI4W8=
 github.com/frankban/quicktest v1.14.6/go.mod h1:4ptaffx2x8+WTWXmUCuVU6aPUX1/Mz7zb5vbUoiM6w0=
 github.com/fsnotify/fsnotify v1.9.0 h1:2Ml+OJNzbYCTzsxtv8vKSFD9PbJjmhYF14k/jKC7S9k=