fix(birdnet-go-dev): build with golang:1.27-trixie to match upstream go.mod

Upstream commit 9d166ef2 raised go.mod to 'go 1.27.0' and moved its own
Dockerfile to golang:1.27-trixie. The addon keeps a separate copy of that
Dockerfile, which stayed on golang:1.26-trixie, so the amd64 build failed
with 'go.mod requires go >= 1.27.0 (running go 1.26.7; GOTOOLCHAIN=local)'.

Re-bumps to 20260901 to retrigger the builder after the failed run was
auto-reverted.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

birdnet-go-dev/CHANGELOG.md

@@ -1,3 +1,5 @@
+## 20260901 (01-09-2026)
+- Synced with upstream birdnet-go (7 commits, incl. Go 1.27 upgrade); build image bumped to golang:1.27-trixie to match; resolved merge conflict in fork PR #6
 ## 20260829.2 (29-08-2026)
 - Minor bugs fixed
 ## 20260829.1 (29-08-2026)

birdnet-go-dev/Dockerfile

@@ -89,7 +89,7 @@ RUN apk add --no-cache curl && \
 # 1a Build environment (mirrors tphakala/birdnet-go Docker/Dockerfile)  #
 #########################################################################
 
-FROM --platform=$BUILDPLATFORM golang:1.26-trixie AS buildenv
+FROM --platform=$BUILDPLATFORM golang:1.27-trixie AS buildenv
 ARG BUILD_VERSION
 ENV BUILD_VERSION=${BUILD_VERSION:-unknown}
 

birdnet-go-dev/config.yaml

@@ -127,5 +127,5 @@ slug: birdnet-go-dev
 udev: true
 url: https://github.com/alexbelgium/hassio-addons
 usb: true
-version: "20260829.2"
+version: "20260901"
 video: true