[tests] Move to using localtestnet instead of devnet

.github/actions/run-go-tests/action.yaml

@@ -11,6 +11,11 @@ runs:
     - uses: actions/setup-go@v5
       with:
         go-version: '>=1.22'
+    # Run a local testnet in the background. After this action runs the local testnet
+    # should be up and queryable. This also installs node and pnpm for us.
+    - uses: aptos-labs/actions/run-local-testnet@main
+      with:
+        PNPM_VERSION: 8.9.0
     # Run unit tests
     - shell: bash
       run: 'go vet ./...'

.node-version

@@ -0,0 +1 @@
+20.14.0

examples/alternative_signing/main.go

@@ -55,7 +55,7 @@ func (signer *AlternativeSigner) AuthKey() *crypto.AuthenticationKey {
 // main This example shows you how to make an alternative signer for the SDK, if you prefer a different library
 func main() {
 	// Create a client for Aptos
-	client, err := aptos.NewClient(aptos.DevnetConfig)
+	client, err := aptos.NewClient(aptos.LocalnetConfig)
 	if err != nil {
 		panic("Failed to create client:" + err.Error())
 	}

examples/external_signing/main.go

@@ -56,7 +56,7 @@ func (signer *ExternalSigner) AuthKey() *crypto.AuthenticationKey {
 // main This example shows you how to make an alternative signer for the SDK, if you prefer a different library
 func main() {
 	// Create a client for Aptos
-	client, err := aptos.NewClient(aptos.DevnetConfig)
+	client, err := aptos.NewClient(aptos.LocalnetConfig)
 	if err != nil {
 		panic("Failed to create client:" + err.Error())
 	}

examples/performance_transaction/main.go

@@ -14,7 +14,7 @@ func main() {
 	start := time.Now()
 	before := time.Now()
 	// Create a client for Aptos
-	client, err := aptos.NewClient(aptos.DevnetConfig)
+	client, err := aptos.NewClient(aptos.LocalnetConfig)
 	if err != nil {
 		panic("Failed to create client:" + err.Error())
 	}

examples/transfer_coin/main.go

@@ -12,7 +12,7 @@ const TransferAmount = 1_000
 // main This example shows you how to make an APT transfer transaction in the simplest possible way
 func main() {
 	// Create a client for Aptos
-	client, err := aptos.NewClient(aptos.DevnetConfig)
+	client, err := aptos.NewClient(aptos.LocalnetConfig)
 	if err != nil {
 		panic("Failed to create client:" + err.Error())
 	}

util.go

@@ -17,7 +17,7 @@ func Sha3256Hash(bytes [][]byte) (output []byte) {
 	return util.Sha3256Hash(bytes)
 }
 
-var testConfig = DevnetConfig
+var testConfig = LocalnetConfig
 
 // createTestClient to use for testing for only one place to configure the network
 // TODO: Allow overrides with environment variable?