Makefile: update chantools version from v0.13.5 to v0.14.0

Without this, there's a go module mismatch error.

Author: Roasbeef

Makefile

@@ -90,7 +90,7 @@ build-itest:
 	@if [ ! -f itest/chantools/chantools ]; then \
 		$(call print, "Building itest chantools."); \
 		rm -rf itest/chantools; \
-		git clone --depth 1 --branch v0.13.5 https://github.com/lightninglabs/chantools.git itest/chantools; \
+		git clone --depth 1 --branch v0.14.0 https://github.com/lightninglabs/chantools.git itest/chantools; \
 		cd itest/chantools && go build ./cmd/chantools; \
 	else \
 		$(call print, "Chantools is already installed and available in itest/chantools."); \

itest/chantools_harness.go

@@ -66,7 +66,7 @@ func NewChantoolsHarness(t *testing.T) ChantoolsHarness {
 	require.NoError(t, err, "failed to get chantools version")
 
 	versionOutStr := string(versionOut)
-	if !strings.Contains(versionOutStr, "chantools version v0.13.5") {
+	if !strings.Contains(versionOutStr, "chantools version v0.14.0") {
 		t.Fatalf("unexpected chantools version: %v", versionOutStr)
 	}