grpc: use the new v2 encoding

The new v2 encoding uses pooling for messages that exceed 1024B so it
improves CPU usage a little bit.

Signed-off-by: Giedrius Statkevičius <giedrius.statkevicius@vinted.com>

go.mod

@@ -87,7 +87,7 @@ require (
 	golang.org/x/time v0.7.0
 	google.golang.org/api v0.195.0 // indirect
 	google.golang.org/genproto v0.0.0-20240823204242-4ba0660f739c // indirect
-	google.golang.org/grpc v1.66.0
+	google.golang.org/grpc v1.67.1
 	google.golang.org/grpc/examples v0.0.0-20211119005141-f45e61797429
 	gopkg.in/alecthomas/kingpin.v2 v2.2.6
 	gopkg.in/yaml.v2 v2.4.0
@@ -289,9 +289,6 @@ replace (
 
 	github.com/vimeo/galaxycache => github.com/thanos-community/galaxycache v0.0.0-20211122094458-3a32041a1f1e
 
-	// Pinning grpc due https://github.com/grpc/grpc-go/issues/7314
-	google.golang.org/grpc => google.golang.org/grpc v1.63.2
-
 	// Overriding to use latest commit.
 	gopkg.in/alecthomas/kingpin.v2 => github.com/alecthomas/kingpin v1.3.8-0.20210301060133-17f40c25f497
 )