upgrade to go 1.21.3

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.23.1 AS builder
+FROM golang:1.23.3 AS builder
 WORKDIR /src
 COPY . ./
 RUN go build -o /bin/passed .

go.mod

@@ -1,3 +1,3 @@
 module git.1e99.eu/1e99/passed
 
-go 1.23.1
+go 1.23.3

main.go

@@ -65,7 +65,7 @@ func newStore() (store storage.Store, err error) {
 
 		err = os.MkdirAll(path, os.ModePerm)
 		if err != nil {
-			return nil, err
+			return
 		}
 
 		store = storage.NewDirStore(path)