update srtool to latest version (#371)

* update srtool to latest version

* Use variables instead of hard coded values.

Author: UtkarshBhardwaj007

develop/parachains/deployment/build-deterministic-runtime.md

@@ -128,7 +128,7 @@ To pull the image from Docker Hub:
 6. Paste the command you copied from the Docker Hub. For example, you might run a command similar to the following, which downloads and unpacks the image:
 
     ```bash
-    docker pull paritytech/srtool:1.62.0
+    docker pull paritytech/srtool:{{ dependencies.srtool.docker_image_version }}
     ```
 
 ### Naming Convention for Images

variables.yml

@@ -20,9 +20,9 @@ dependencies:
     version: v15.0.2
   srtool:
     repository_url: https://github.com/paritytech/srtool
-    version: v0.16.0
+    version: v0.17.0
     docker_image_name: paritytech/srtool
-    docker_image_version: 1.62.0
+    docker_image_version: 1.81.0
   polkadot_sdk:
     repository_url: https://github.com/paritytech/polkadot-sdk
     version: polkadot-stable2412