deps: upgrade Go 1.24.13/1.25.7, protoc 33.5, and module dependencies (#917)

- Go minimum 1.24.12 → 1.24.13, toolchain go1.25.6 → go1.25.7 (Feb 4
security fixes)
- protoc 33.4 → 33.5, protoc-gen-go-grpc 1.6.0 → 1.6.1
- Update all Go module dependencies (go get -u -t ./...)
- Regenerate protobuf/grpc code

Co-authored-by: Claude Haiku 4.5 <noreply@anthropic.com>

build/go.mod

@@ -1,13 +1,14 @@
 module github.com/zrepl/zrepl/build
 
-go 1.24.12
-toolchain go1.25.6
+go 1.24.13
+
+toolchain go1.25.7
 
 require (
 	github.com/alvaroloes/enumer v1.1.2
 	github.com/wadey/gocovmerge v0.0.0-20160331181800-b5bfa59ec0ad
 	golang.org/x/tools v0.41.0
-	google.golang.org/grpc/cmd/protoc-gen-go-grpc v1.6.0
+	google.golang.org/grpc/cmd/protoc-gen-go-grpc v1.6.1
 	google.golang.org/protobuf v1.36.11
 )
 
@@ -15,8 +16,8 @@ require (
 	github.com/pascaldekloe/name v1.0.1 // indirect
 	golang.org/x/mod v0.32.0 // indirect
 	golang.org/x/sync v0.19.0 // indirect
-	golang.org/x/sys v0.40.0 // indirect
-	golang.org/x/telemetry v0.0.0-20260109210033-bd525da824e2 // indirect
+	golang.org/x/sys v0.41.0 // indirect
+	golang.org/x/telemetry v0.0.0-20260205145544-86a5c4bf3c8d // indirect
 	golang.org/x/text v0.31.0 // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20250818200422-3122310a409c // indirect
 	google.golang.org/grpc v1.75.0 // indirect