rebase: bump github.com/aws/aws-sdk-go-v2/service/sts

Bumps the github-dependencies group with 1 update: [github.com/aws/aws-sdk-go-v2/service/sts](https://github.com/aws/aws-sdk-go-v2).


Updates `github.com/aws/aws-sdk-go-v2/service/sts` from 1.33.17 to 1.33.18
- [Release notes](https://github.com/aws/aws-sdk-go-v2/releases)
- [Changelog](https://github.com/aws/aws-sdk-go-v2/blob/main/changelog-template.json)
- [Commits](https://github.com/aws/aws-sdk-go-v2/compare/service/sns/v1.33.17...service/sns/v1.33.18)

---
updated-dependencies:
- dependency-name: github.com/aws/aws-sdk-go-v2/service/sts
  dependency-version: 1.33.18
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: github-dependencies
...

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

vendor/github.com/aws/aws-sdk-go-v2/service/sts/CHANGELOG.md

@@ -1,3 +1,7 @@
+# v1.33.18 (2025-04-03)
+
+* No change notes available for this release.
+
 # v1.33.17 (2025-03-04.2)
 
 * **Bug Fix**: Add assurance test for operation order.

vendor/github.com/aws/aws-sdk-go-v2/service/sts/go_module_metadata.go

@@ -3,4 +3,4 @@
 package sts
 
 // goModuleVersion is the tagged release for this module
-const goModuleVersion = "1.33.17"
+const goModuleVersion = "1.33.18"

vendor/github.com/aws/aws-sdk-go-v2/service/sts/internal/endpoints/endpoints.go

@@ -87,6 +87,7 @@ func New() *Resolver {
 var partitionRegexp = struct {
 	Aws      *regexp.Regexp
 	AwsCn    *regexp.Regexp
+	AwsEusc  *regexp.Regexp
 	AwsIso   *regexp.Regexp
 	AwsIsoB  *regexp.Regexp
 	AwsIsoE  *regexp.Regexp
@@ -96,6 +97,7 @@ var partitionRegexp = struct {
 
 	Aws:      regexp.MustCompile("^(us|eu|ap|sa|ca|me|af|il|mx)\\-\\w+\\-\\d+$"),
 	AwsCn:    regexp.MustCompile("^cn\\-\\w+\\-\\d+$"),
+	AwsEusc:  regexp.MustCompile("^eusc\\-(de)\\-\\w+\\-\\d+$"),
 	AwsIso:   regexp.MustCompile("^us\\-iso\\-\\w+\\-\\d+$"),
 	AwsIsoB:  regexp.MustCompile("^us\\-isob\\-\\w+\\-\\d+$"),
 	AwsIsoE:  regexp.MustCompile("^eu\\-isoe\\-\\w+\\-\\d+$"),
@@ -348,6 +350,27 @@ var defaultPartitions = endpoints.Partitions{
 			}: endpoints.Endpoint{},
 		},
 	},
+	{
+		ID: "aws-eusc",
+		Defaults: map[endpoints.DefaultKey]endpoints.Endpoint{
+			{
+				Variant: endpoints.FIPSVariant,
+			}: {
+				Hostname:          "sts-fips.{region}.amazonaws.eu",
+				Protocols:         []string{"https"},
+				SignatureVersions: []string{"v4"},
+			},
+			{
+				Variant: 0,
+			}: {
+				Hostname:          "sts.{region}.amazonaws.eu",
+				Protocols:         []string{"https"},
+				SignatureVersions: []string{"v4"},
+			},
+		},
+		RegionRegex:    partitionRegexp.AwsEusc,
+		IsRegionalized: true,
+	},
 	{
 		ID: "aws-iso",
 		Defaults: map[endpoints.DefaultKey]endpoints.Endpoint{