chore(deps): update goreleaser/goreleaser-pro docker tag to v2.15.1 (#734)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Ben McNicholl <ben.mcnicholl@buildkite.com>

Author: renovate[bot]

.buildkite/Dockerfile

@@ -1,5 +1,5 @@
 FROM golang:1.26.1@sha256:595c7847cff97c9a9e76f015083c481d26078f961c9c8dca3923132f51fe12f1
 
-COPY --from=goreleaser/goreleaser-pro:v2.15.0@sha256:7e7858e92114bffb6668a0c7dcdbeb7ef608554a3995718ff70181ff9d2006cd /usr/bin/goreleaser /usr/local/bin/goreleaser
+COPY --from=goreleaser/goreleaser-pro:v2.15.1@sha256:cac93571cc3ff07c683df488fa13fa6eccfc358daf82d2f7c8720d3c95faf46d /usr/bin/goreleaser /usr/local/bin/goreleaser
 COPY --from=golangci/golangci-lint:v2.11.4@sha256:67dfc9eeeb0eb13fc1a36329c2c378197dc561f1edf1a7792e3f771606bb0e15 /usr/bin/golangci-lint /usr/local/bin/golangci-lint
 COPY --from=ghcr.io/ko-build/ko:fc0e4c0582f0801600929b5aaf6981aabdf47148 /ko-app/ko /usr/local/bin/ko