build(deps): bump github.com/aws/aws-sdk-go from 1.53.19 to 1.53.21

Bumps [github.com/aws/aws-sdk-go](https://github.com/aws/aws-sdk-go) from 1.53.19 to 1.53.21.
- [Release notes](https://github.com/aws/aws-sdk-go/releases)
- [Changelog](https://github.com/aws/aws-sdk-go/blob/main/CHANGELOG_PENDING.md)
- [Commits](aws/aws-sdk-go@v1.53.19...v1.53.21)

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

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

go.mod

@@ -11,7 +11,7 @@ require (
 	github.com/DataDog/datadog-go v4.8.3+incompatible
 	github.com/PagerDuty/go-pagerduty v1.8.0
 	github.com/alecthomas/kingpin/v2 v2.4.0
-	github.com/aws/aws-sdk-go v1.53.19
+	github.com/aws/aws-sdk-go v1.53.21
 	github.com/cloudevents/sdk-go/v2 v2.15.2
 	github.com/eclipse/paho.mqtt.golang v1.4.3
 	github.com/embano1/memlog v0.4.6

go.sum

@@ -181,8 +181,8 @@ github.com/aws/aws-sdk-go v1.15.27/go.mod h1:mFuSZ37Z9YOHbQEwBWztmVzqXrEkub65tZo
 github.com/aws/aws-sdk-go v1.30.19/go.mod h1:5zCpMtNQVjRREroY7sYe8lOMRSxkhG6MZveU8YkpAk0=
 github.com/aws/aws-sdk-go v1.37.0/go.mod h1:hcU610XS61/+aQV88ixoOzUoG7v3b31pl2zKMmprdro=
 github.com/aws/aws-sdk-go v1.43.31/go.mod h1:y4AeaBuwd2Lk+GepC1E9v0qOiTws0MIWAX4oIKwKHZo=
-github.com/aws/aws-sdk-go v1.53.19 h1:WEuWc918RXlIaPCyU11F7hH9H1ItK+8m2c/uoQNRUok=
-github.com/aws/aws-sdk-go v1.53.19/go.mod h1:LF8svs817+Nz+DmiMQKTO3ubZ/6IaTpq3TjupRn3Eqk=
+github.com/aws/aws-sdk-go v1.53.21 h1:vAXk3mJQqveg1H3uZaUBaGXrKWa97hc9zBhudsDZugA=
+github.com/aws/aws-sdk-go v1.53.21/go.mod h1:LF8svs817+Nz+DmiMQKTO3ubZ/6IaTpq3TjupRn3Eqk=
 github.com/aws/aws-sdk-go-v2 v1.16.2/go.mod h1:ytwTPBG6fXTZLxxeeCCWj2/EMYp/xDUgX+OET6TLNNU=
 github.com/aws/aws-sdk-go-v2 v1.23.0/go.mod h1:i1XDttT4rnf6vxc9AuskLc6s7XBee8rlLilKlc03uAA=
 github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.4.1/go.mod h1:n8Bs1ElDD2wJ9kCRTczA83gYbBmjSwZp3umc6zF4EeM=