build(deps): bump google.golang.org/protobuf from 1.28.1 to 1.33.0

Bumps google.golang.org/protobuf from 1.28.1 to 1.33.0.

---
updated-dependencies:
- dependency-name: google.golang.org/protobuf
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

go.mod

@@ -18,30 +18,16 @@ require (
 	v.io/x/lib v0.1.17
 	v.io/x/ref/internal/logger v0.1.1
 	v.io/x/ref/lib/flags/sitedefaults v0.1.1
-	v.io/x/ref/test/compatibility/modules/simple v0.0.0-20220116222041-f948f3a44e0d
+	v.io/x/ref/test/compatibility/modules/simple v0.0.0-20240130193053-f944a879b47f
 )
 
 require (
-	github.com/cespare/xxhash/v2 v2.2.0 // indirect
-	github.com/dgraph-io/badger/v4 v4.2.0 // indirect
-	github.com/dgraph-io/ristretto v0.1.1 // indirect
-	github.com/dustin/go-humanize v1.0.0 // indirect
 	github.com/go-ole/go-ole v1.3.0 // indirect
-	github.com/gogo/protobuf v1.3.2 // indirect
-	github.com/golang/glog v1.0.0 // indirect
-	github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6 // indirect
-	github.com/golang/protobuf v1.5.2 // indirect
-	github.com/golang/snappy v0.0.3 // indirect
-	github.com/google/flatbuffers v1.12.1 // indirect
-	github.com/klauspost/compress v1.12.3 // indirect
 	github.com/lufia/plan9stats v0.0.0-20231016141302-07b5767bb0ed // indirect
-	github.com/pkg/errors v0.9.1 // indirect
 	github.com/power-devops/perfstat v0.0.0-20221212215047-62379fc7944b // indirect
 	github.com/shoenig/go-m1cpu v0.1.6 // indirect
 	github.com/tklauser/go-sysconf v0.3.13 // indirect
 	github.com/tklauser/numcpus v0.7.0 // indirect
 	github.com/yusufpapurcu/wmi v1.2.3 // indirect
-	go.opencensus.io v0.22.5 // indirect
 	golang.org/x/sys v0.15.0 // indirect
-	google.golang.org/protobuf v1.28.1 // indirect
 )