chore(deps): update alpine docker tag to v3.23 (#348)

| datasource | package | from | to   |
| ---------- | ------- | ---- | ---- |
| docker     | alpine  | 3.22 | 3.23 |

Signed-off-by: renovate-sh-app[bot] <219655108+renovate-sh-app[bot]@users.noreply.github.com>
Co-authored-by: renovate-sh-app[bot] <219655108+renovate-sh-app[bot]@users.noreply.github.com>

Author: renovate-sh-app[bot]

Dockerfile

@@ -7,7 +7,7 @@ WORKDIR /app
 COPY . /app/
 RUN --mount=type=cache,target=/go/pkg/mod CGO_ENABLED=0 GOOS=linux go build -ldflags "${GO_LDFLAGS} -extldflags '-static'" -o /app/flagger-k6-webhook cmd/main.go
 
-FROM alpine:3.22@sha256:4b7ce07002c69e8f3d704a9c5d6fd3053be500b7f1c69fc0d80990c2ad8dd412
+FROM alpine:3.23@sha256:51183f2cfa6320055da30872f211093f9ff1d3cf06f39a0bdb212314c5dc7375
 
 COPY --from=build /app/flagger-k6-webhook /usr/bin/flagger-k6-webhook
 COPY --from=grafana/k6@sha256:16bc2347c323b1155a200d6fe9c2b801a570b6e0e647203cf382a083782b904f /usr/bin/k6 /usr/bin/k6