chore(deps): bump github.com/sigstore/timestamp-authority/v2

Bumps [github.com/sigstore/timestamp-authority/v2](https://github.com/sigstore/timestamp-authority) from 2.0.4 to 2.0.6.
- [Release notes](https://github.com/sigstore/timestamp-authority/releases)
- [Changelog](https://github.com/sigstore/timestamp-authority/blob/main/CHANGELOG.md)
- [Commits](sigstore/timestamp-authority@v2.0.4...v2.0.6)

---
updated-dependencies:
- dependency-name: github.com/sigstore/timestamp-authority/v2
  dependency-version: 2.0.6
  dependency-type: indirect
...

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

Author: dependabot[bot]

go.mod

@@ -114,8 +114,7 @@ require (
 	github.com/chainguard-dev/git-urls v1.0.2 // indirect
 	github.com/chrismellard/docker-credential-acr-env v0.0.0-20230304212654-82a0ddb27589 // indirect
 	github.com/clbanning/mxj/v2 v2.7.0 // indirect
-	github.com/clipperhouse/stringish v0.1.1 // indirect
-	github.com/clipperhouse/uax29/v2 v2.3.0 // indirect
+	github.com/clipperhouse/uax29/v2 v2.6.0 // indirect
 	github.com/cloudflare/cfssl v1.6.5 // indirect
 	github.com/cloudflare/circl v1.6.3 // indirect
 	github.com/common-nighthawk/go-figure v0.0.0-20210622060536-734e95fb86be // indirect
@@ -213,8 +212,8 @@ require (
 	github.com/google/go-querystring v1.2.0 // indirect
 	github.com/google/s2a-go v0.1.9 // indirect
 	github.com/google/uuid v1.6.0 // indirect
-	github.com/googleapis/enterprise-certificate-proxy v0.3.12 // indirect
-	github.com/googleapis/gax-go/v2 v2.17.0 // indirect
+	github.com/googleapis/enterprise-certificate-proxy v0.3.14 // indirect
+	github.com/googleapis/gax-go/v2 v2.19.0 // indirect
 	github.com/gorilla/websocket v1.5.4-0.20250319132907-e064f32e3674 // indirect
 	github.com/gowebpki/jcs v1.0.1 // indirect
 	github.com/gregjones/httpcache v0.0.0-20190611155906-901d90724c79 // indirect
@@ -237,7 +236,7 @@ require (
 	github.com/klauspost/compress v1.18.5 // indirect
 	github.com/klauspost/cpuid/v2 v2.3.0 // indirect
 	github.com/klauspost/pgzip v1.2.6 // indirect
-	github.com/letsencrypt/boulder v0.20251110.0 // indirect
+	github.com/letsencrypt/boulder v0.20260223.0 // indirect
 	github.com/liggitt/tabwriter v0.0.0-20181228230101-89fcab3d43de // indirect
 	github.com/magiconair/properties v1.8.10 // indirect
 	github.com/mandelsoft/filepath v0.0.0-20240223090642-3e2777258aa3 // indirect
@@ -302,9 +301,9 @@ require (
 	github.com/sigstore/protobuf-specs v0.5.0 // indirect
 	github.com/sigstore/rekor v1.5.1 // indirect
 	github.com/sigstore/rekor-tiles/v2 v2.2.0 // indirect
-	github.com/sigstore/sigstore v1.10.4 // indirect
+	github.com/sigstore/sigstore v1.10.5 // indirect
 	github.com/sigstore/sigstore-go v1.1.4 // indirect
-	github.com/sigstore/timestamp-authority/v2 v2.0.4 // indirect
+	github.com/sigstore/timestamp-authority/v2 v2.0.6 // indirect
 	github.com/sirupsen/logrus v1.9.4 // indirect
 	github.com/skeema/knownhosts v1.3.2 // indirect
 	github.com/spf13/afero v1.15.0 // indirect
@@ -355,19 +354,19 @@ require (
 	go.uber.org/zap v1.27.1 // indirect
 	go.yaml.in/yaml/v2 v2.4.3 // indirect
 	go.yaml.in/yaml/v3 v3.0.4 // indirect
-	golang.org/x/crypto v0.49.0 // indirect
-	golang.org/x/mod v0.33.0 // indirect
-	golang.org/x/net v0.52.0 // indirect
+	golang.org/x/crypto v0.50.0 // indirect
+	golang.org/x/mod v0.34.0 // indirect
+	golang.org/x/net v0.53.0 // indirect
 	golang.org/x/oauth2 v0.36.0 // indirect
 	golang.org/x/sync v0.20.0 // indirect
-	golang.org/x/sys v0.42.0 // indirect
-	golang.org/x/term v0.41.0 // indirect
-	golang.org/x/text v0.35.0 // indirect
+	golang.org/x/sys v0.43.0 // indirect
+	golang.org/x/term v0.42.0 // indirect
+	golang.org/x/text v0.36.0 // indirect
 	golang.org/x/time v0.15.0 // indirect
 	gomodules.xyz/jsonpatch/v2 v2.5.0 // indirect
-	google.golang.org/api v0.269.0 // indirect
-	google.golang.org/genproto/googleapis/api v0.0.0-20260128011058-8636f8732409 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20260217215200-42d3e9bedb6d // indirect
+	google.golang.org/api v0.272.0 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20260316180232-0b37fe3546d5 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20260316180232-0b37fe3546d5 // indirect
 	google.golang.org/grpc v1.79.3 // indirect
 	google.golang.org/protobuf v1.36.11 // indirect
 	gopkg.in/evanphx/json-patch.v4 v4.13.0 // indirect
@@ -387,6 +386,6 @@ require (
 	sigs.k8s.io/json v0.0.0-20250730193827-2d320260d730 // indirect
 	sigs.k8s.io/kustomize/kyaml v0.21.1 // indirect
 	sigs.k8s.io/randfill v1.0.0 // indirect
-	sigs.k8s.io/release-utils v0.12.3 // indirect
+	sigs.k8s.io/release-utils v0.12.4 // indirect
 	sigs.k8s.io/structured-merge-diff/v6 v6.3.2-0.20260122202528-d9cc6641c482 // indirect
 )