Bump github.com/redis/go-redis/v9 from 9.2.1 to 9.4.0 in /backend

Bumps [github.com/redis/go-redis/v9](https://github.com/redis/go-redis) from 9.2.1 to 9.4.0.
- [Release notes](https://github.com/redis/go-redis/releases)
- [Changelog](https://github.com/redis/go-redis/blob/master/CHANGELOG.md)
- [Commits](redis/go-redis@v9.2.1...v9.4.0)

---
updated-dependencies:
- dependency-name: github.com/redis/go-redis/v9
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

backend/go.mod

@@ -4,7 +4,7 @@ go 1.21
 
 require (
 	github.com/cakturk/go-netstat v0.0.0-20200220111822-e5b49efee7a5
-	github.com/redis/go-redis/v9 v9.2.1
+	github.com/redis/go-redis/v9 v9.4.0
 	github.com/spf13/viper v1.17.0
 )
 
@@ -41,7 +41,7 @@ require (
 	github.com/spf13/afero v1.10.0 // indirect
 	github.com/spf13/cast v1.5.1 // indirect
 	github.com/spf13/cobra v1.7.0
-	github.com/spf13/pflag v1.0.5 // indirect
+	github.com/spf13/pflag v1.0.5
 	github.com/subosito/gotenv v1.6.0 // indirect
 	golang.org/x/sys v0.12.0 // indirect
 	golang.org/x/text v0.13.0 // indirect

backend/go.sum

@@ -182,8 +182,8 @@ github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 h1:Jamvg5psRI
 github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
 github.com/redis/go-redis/v9 v9.0.2/go.mod h1:/xDTe9EF1LM61hek62Poq2nzQSGj0xSrEtEHbBQevps=
-github.com/redis/go-redis/v9 v9.2.1 h1:WlYJg71ODF0dVspZZCpYmoF1+U1Jjk9Rwd7pq6QmlCg=
-github.com/redis/go-redis/v9 v9.2.1/go.mod h1:hdY0cQFCN4fnSYT6TkisLufl/4W5UIXyv0b/CLO2V2M=
+github.com/redis/go-redis/v9 v9.4.0 h1:Yzoz33UZw9I/mFhx4MNrB6Fk+XHO1VukNcCa1+lwyKk=
+github.com/redis/go-redis/v9 v9.4.0/go.mod h1:hdY0cQFCN4fnSYT6TkisLufl/4W5UIXyv0b/CLO2V2M=
 github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
 github.com/rogpeppe/go-internal v1.9.0 h1:73kH8U+JUqXU8lRuOHeVHaa/SZPifC7BkcraZVejAe8=
 github.com/rogpeppe/go-internal v1.9.0/go.mod h1:WtVeX8xhTBvf0smdhujwtBcq4Qrzq/fJaraNFVN+nFs=