Restrict eth-account version < 0.12.0 due to incompatible pydantic requirement; Remove ethereum extra package, as it was already contained in main package

Author: MHHukiewitz

README.md

@@ -36,11 +36,10 @@ $ pip install aleph-sdk-python
 Some functionalities require additional dependencies. They can be installed like this:
 
 ```shell
-$ pip install aleph-sdk-python[ethereum, dns]
+$ pip install aleph-sdk-python[solana, dns]
 ```
 
 The following extra dependencies are available:
-- `ethereum` for Ethereum and Ethereum-compatible chains
 - `solana` for Solana accounts and signatures
 - `cosmos` for Substrate/Cosmos accounts and signatures
 - `nuls2` for NULS2 accounts and signatures

pyproject.toml

@@ -27,7 +27,7 @@ dependencies = [
     "coincurve; python_version<\"3.11\"",
     "coincurve>=17.0.0; python_version>=\"3.11\"",
     "eth_abi>=4.0.0; python_version>=\"3.11\"",
-    "eth_account>=0.4.0",
+    "eth_account>=0.4.0,<0.12.0",
     "python-magic",
     "typer",
     "typing_extensions",
@@ -43,10 +43,6 @@ dns = [
 docs = [
     "sphinxcontrib-plantuml",
 ]
-ethereum = [
-    "eth_abi>=4.0.0; python_version>=\"3.11\"",
-    "eth_account>=0.4.0",
-]
 ledger = [
     "ledgereth==0.9.0",
 ]
@@ -75,7 +71,7 @@ encryption = [
     "eciespy>=0.3.13; python_version>=\"3.11\"",
 ]
 all = [
-    "aleph-sdk-python[cosmos,dns,docs,ethereum,ledger,mqtt,nuls2,polkadot,solana,tezos,encryption]",
+    "aleph-sdk-python[cosmos,dns,docs,ledger,mqtt,nuls2,polkadot,solana,tezos,encryption]",
 ]
 
 [project.urls]
@@ -111,7 +107,6 @@ python = ["3.8", "3.9", "3.10", "3.11"]
 features = [
     "cosmos",
     "dns",
-    "ethereum",
     "ledger",
     "nuls2",
     "polkadot",