[#49] go.mod: Bump go version to 1.20

Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>

go.mod

@@ -1,6 +1,6 @@
 module git.frostfs.info/TrueCloudLab/frostfs-contract
 
-go 1.14
+go 1.20
 
 require (
 	github.com/google/uuid v1.3.0
@@ -9,3 +9,51 @@ require (
 	github.com/nspcc-dev/neo-go/pkg/interop v0.0.0-20231020160724-c3955f87d1b5
 	github.com/stretchr/testify v1.8.4
 )
+
+require (
+	github.com/benbjohnson/clock v1.1.0 // indirect
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/bits-and-blooms/bitset v1.8.0 // indirect
+	github.com/cespare/xxhash/v2 v2.2.0 // indirect
+	github.com/consensys/bavard v0.1.13 // indirect
+	github.com/consensys/gnark-crypto v0.12.2-0.20231013160410-1f65e75b6dfb // indirect
+	github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1 // indirect
+	github.com/golang/protobuf v1.5.3 // indirect
+	github.com/golang/snappy v0.0.1 // indirect
+	github.com/google/go-cmp v0.5.9 // indirect
+	github.com/gorilla/websocket v1.4.2 // indirect
+	github.com/hashicorp/golang-lru v0.6.0 // indirect
+	github.com/holiman/uint256 v1.2.0 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
+	github.com/mmcloughlin/addchain v0.4.0 // indirect
+	github.com/nspcc-dev/go-ordered-json v0.0.0-20220111165707-25110be27d22 // indirect
+	github.com/nspcc-dev/rfc6979 v0.2.0 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/prometheus/client_golang v1.13.0 // indirect
+	github.com/prometheus/client_model v0.2.0 // indirect
+	github.com/prometheus/common v0.37.0 // indirect
+	github.com/prometheus/procfs v0.8.0 // indirect
+	github.com/rogpeppe/go-internal v1.11.0 // indirect
+	github.com/russross/blackfriday/v2 v2.0.1 // indirect
+	github.com/shurcooL/sanitized_anchor_name v1.0.0 // indirect
+	github.com/syndtr/goleveldb v1.0.1-0.20210305035536-64b5b1c73954 // indirect
+	github.com/twmb/murmur3 v1.1.5 // indirect
+	github.com/urfave/cli v1.22.5 // indirect
+	go.etcd.io/bbolt v1.3.7 // indirect
+	go.uber.org/atomic v1.10.0 // indirect
+	go.uber.org/multierr v1.9.0 // indirect
+	go.uber.org/zap v1.24.0 // indirect
+	golang.org/x/crypto v0.14.0 // indirect
+	golang.org/x/mod v0.12.0 // indirect
+	golang.org/x/sync v0.3.0 // indirect
+	golang.org/x/sys v0.13.0 // indirect
+	golang.org/x/term v0.13.0 // indirect
+	golang.org/x/text v0.13.0 // indirect
+	golang.org/x/tools v0.12.1-0.20230815132531-74c255bcf846 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20230803162519-f966b187b2e5 // indirect
+	google.golang.org/protobuf v1.31.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+	rsc.io/tmplfunc v0.0.3 // indirect
+)