Upgrade grpc-go to 1.82.1 for GHSA-hrxh-6v49-42gf (#1083)

## Summary

- Upgrade indirect dependency `google.golang.org/grpc` from 1.81.1 to 1.82.1, clearing Dependabot alert #3 (GHSA-hrxh-6v49-42gf, high severity: xDS RBAC authorization bypass and two server-side denial-of-service issues).
- roborev uses grpc only as an OTLP telemetry export client via `go.kenn.io/kit/telemetry`, so the vulnerable server-side paths are not reachable; the bump keeps the dependency off the vulnerable range.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Wes McKinney <wesm@users.noreply.github.com>

Author: wesm

flake.nix

@@ -37,7 +37,7 @@
 
             src = ./.;
 
-            vendorHash = "sha256-w632Je66dG5MFzcTKXchZQJRi89W7HrEj1rtvVUFKEg=";
+            vendorHash = "sha256-A5ZcODNZyjMTTFI8QZqaYn0Wddr8+899R+C1n27TI1U=";
 
             subPackages = [ "cmd/roborev" ];
 

go.mod

@@ -156,7 +156,7 @@ require (
 	golang.org/x/time v0.15.0 // indirect
 	google.golang.org/genproto/googleapis/api v0.0.0-20260706201446-f0a921348800 // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20260706201446-f0a921348800 // indirect
-	google.golang.org/grpc v1.81.1 // indirect
+	google.golang.org/grpc v1.82.1 // indirect
 	google.golang.org/protobuf v1.36.11 // indirect
 	gopkg.in/warnings.v0 v0.1.2 // indirect
 	modernc.org/libc v1.74.4 // indirect

go.sum

@@ -396,8 +396,8 @@ google.golang.org/genproto/googleapis/api v0.0.0-20260706201446-f0a921348800 h1:
 google.golang.org/genproto/googleapis/api v0.0.0-20260706201446-f0a921348800/go.mod h1:FPk7EXUKMtImne7AmknoYjT4QXqKIzzRbeQIXzLk6fQ=
 google.golang.org/genproto/googleapis/rpc v0.0.0-20260706201446-f0a921348800 h1:qEHAMpSaUhtD0p3NbEEI83HwNGFxEwaSJ1G9PLnCBZE=
 google.golang.org/genproto/googleapis/rpc v0.0.0-20260706201446-f0a921348800/go.mod h1:4Hqkh8ycfw05ld/3BWL7rJOSfebL2Q+DVDeRgYgxUU8=
-google.golang.org/grpc v1.81.1 h1:VnnIIZ88UzOOKLukQi+ImGz8O1Wdp8nAGGnvOfEIWQQ=
-google.golang.org/grpc v1.81.1/go.mod h1:xGH9GfzOyMTGIOXBJmXt+BX/V0kcdQbdcuwQ/zNw42I=
+google.golang.org/grpc v1.82.1 h1:NnAxzGRA0677vCa4BUkOAnO5+FfQqVl9iUXeD0IqcGE=
+google.golang.org/grpc v1.82.1/go.mod h1:yzTZ1TB1Z3SG+LIYaI+WiE8D5+PZ3ArnrSp8zF3+/ZA=
 google.golang.org/protobuf v1.36.11 h1:fV6ZwhNocDyBLK0dj+fg8ektcVegBBuEolpbTQyBNVE=
 google.golang.org/protobuf v1.36.11/go.mod h1:HTf+CrKn2C3g5S8VImy6tdcUvCska2kB7j23XfzDpco=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=