[Framework] Update Release.yaml for testnet. (#20183)

Author: vsharongg

aptos-move/aptos-release-builder/data/release.yaml

@@ -1,20 +1,20 @@
 ---
-remote_endpoint: https://fullnode.mainnet.aptoslabs.com
+remote_endpoint: https://fullnode.testnet.aptoslabs.com
 # replace with below for actual release, compat test needs concrete URL above:
 # remote_endpoint: ~
-name: "vX.YY.Z"
+name: "v1.48.0"
 proposals:
   - name: proposal_1_upgrade_framework
     metadata:
-      title: "Multi-step proposal to upgrade mainnet framework, version vX.YY.Z"
-      description: "This includes changes in https://github.com/aptos-labs/aptos-core/releases/tag/aptos-node-vX.YY.Z"
+      title: "Multi-step proposal to upgrade testnet framework, version v1.48.0"
+      description: "This includes changes in https://github.com/aptos-labs/aptos-core/releases/tag/aptos-node-v1.48.0"
     execution_mode: MultiStep
     update_sequence:
       - Gas:
-          new: current
+          # new: current
           # replace with below for actual release, above "current" is needed for compat tests:
-          # old: https://raw.githubusercontent.com/aptos-labs/aptos-networks/main/gas/vX.WW.Z.json
-          # new: https://raw.githubusercontent.com/aptos-labs/aptos-networks/main/gas/vX.YY.Z.json
+          old: https://raw.githubusercontent.com/aptos-labs/aptos-networks/main/gas/v1.47.1.json
+          new: https://raw.githubusercontent.com/aptos-labs/aptos-networks/main/gas/v1.48.0.json
       - Framework:
           bytecode_version: 9
           git_hash: ~