misc: handle strings.Title deprecation

Signed-off-by: Hidde Beydals <[email protected]>

go.mod

@@ -34,6 +34,7 @@ require (
 	github.com/whilp/git-urls v1.0.0
 	github.com/xanzy/go-gitlab v0.90.0
 	golang.org/x/oauth2 v0.11.0
+	golang.org/x/text v0.12.0
 	google.golang.org/api v0.138.0
 	k8s.io/api v0.27.4
 	k8s.io/apimachinery v0.27.4
@@ -140,7 +141,6 @@ require (
 	golang.org/x/sync v0.3.0 // indirect
 	golang.org/x/sys v0.11.0 // indirect
 	golang.org/x/term v0.11.0 // indirect
-	golang.org/x/text v0.12.0 // indirect
 	golang.org/x/time v0.3.0 // indirect
 	gomodules.xyz/jsonpatch/v2 v2.3.0 // indirect
 	google.golang.org/appengine v1.6.7 // indirect

internal/notifier/alertmanager.go

@@ -21,7 +21,9 @@ import (
 	"crypto/x509"
 	"fmt"
 	"net/url"
-	"strings"
+
+	"golang.org/x/text/cases"
+	"golang.org/x/text/language"
 
 	eventv1 "github.com/fluxcd/pkg/apis/event/v1beta1"
 )
@@ -70,7 +72,7 @@ func (s *Alertmanager) Post(ctx context.Context, event eventv1.Event) error {
 	if event.Metadata != nil {
 		labels = event.Metadata
 	}
-	labels["alertname"] = "Flux" + event.InvolvedObject.Kind + strings.Title(event.Reason)
+	labels["alertname"] = "Flux" + event.InvolvedObject.Kind + cases.Title(language.Und).String(event.Reason)
 	labels["severity"] = event.Severity
 	labels["reason"] = event.Reason
 	labels["timestamp"] = event.Timestamp.String()