Update module google.golang.org/grpc to v1.76.0

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

vendor/google.golang.org/grpc/mem/buffer_slice.go

@@ -137,6 +137,9 @@ type Reader interface {
 	Close() error
 	// Remaining returns the number of unread bytes remaining in the slice.
 	Remaining() int
+	// Reset frees the currently held buffer slice and starts reading from the
+	// provided slice. This allows reusing the reader object.
+	Reset(s BufferSlice)
 }
 
 type sliceReader struct {
@@ -150,6 +153,14 @@ func (r *sliceReader) Remaining() int {
 	return r.len
 }
 
+func (r *sliceReader) Reset(s BufferSlice) {
+	r.data.Free()
+	s.Ref()
+	r.data = s
+	r.len = s.Len()
+	r.bufferIdx = 0
+}
+
 func (r *sliceReader) Close() error {
 	r.data.Free()
 	r.data = nil