Support RPC 0.8.1, use auto estimate (#3248)

<!-- Reference any GitHub issues resolved by this PR -->

Closes #3182 
Closes #3100

## Introduced changes

<!-- A brief description of the changes -->

- Bumped starknet rs and subsequently supported RPC version to 0.8.1
- Restored auto estimations

## Checklist

<!-- Make sure all of these are complete -->

- [x] Linked relevant issue
- [x] Updated relevant documentation
- [x] Added relevant tests
- [x] Performed self-review of the code
- [x] Added changes to `CHANGELOG.md`

---------

Co-authored-by: Franciszek Job <[email protected]>

Author: cptartur

.github/workflows/ci.yml

@@ -1,7 +1,7 @@
 name: CI
 
 env:
-  DEVNET_REV: fc5a2753a2eedcc27eed7a4fae3ecac08c2ca1b4 # v0.3.0
+  DEVNET_REV: 26292d1f92807090776b470f43b321f150f55ffd # v0.4.1
 
 on:
   pull_request:

CHANGELOG.md

@@ -7,12 +7,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
-### Cast
-
-#### Added
-
-- when using `sncast call` the response will be printed as a Cairo-like string representation of the return values
-
 ### Forge
 
 #### Added
@@ -24,6 +18,16 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - "Success data" message is no longer printed when a test using the `#[should_panic]` attribute passes
 
+### Cast
+
+#### Added
+
+- when using `sncast call` the response will be printed as a Cairo-like string representation of the return values
+
+#### Changed
+
+- The supported RPC version is now 0.8.1
+
 ## [0.42.0] - 2025-04-28
 
 ### Forge