deps(minor): update alpine docker tag to v3.23

Author: renovate[bot]

cmd/mygithub/Dockerfile

@@ -16,7 +16,7 @@ RUN --mount=type=cache,target=/go/pkg \
     --mount=type=cache,target=/root/.cache/go-build \
     task generate build GOOS=${TARGETOS} GOARCH=${TARGETARCH}
 
-FROM alpine:3.22@sha256:4b7ce07002c69e8f3d704a9c5d6fd3053be500b7f1c69fc0d80990c2ad8dd412
+FROM alpine:3.23@sha256:51183f2cfa6320055da30872f211093f9ff1d3cf06f39a0bdb212314c5dc7375
 
 RUN apk add --no-cache ca-certificates mailcap