Use latest version for Speculos and Ragger

tests/ragger/requirements.txt

@@ -1,4 +1,4 @@
-ragger[speculos]>=1.7.0,<1.8.0
+ragger[speculos]
 pytest
 ecdsa
 simple-rlp

tests/speculos/README.md

@@ -11,9 +11,8 @@ These tests are implemented in Python with the `SpeculosClient` interface which
 Python dependencies are listed in [requirements.txt](requirements.txt)
 
 ```shell
-python3 -m pip install --extra-index-url https://test.pypi.org/simple/ -r requirements.txt
+python3 -m pip install -r requirements.txt
 ```
-> The extra index allows to fetch the latest version of Speculos.
 
 ## Usage
 
@@ -47,4 +46,4 @@ pytest --model nanox --path ./elfs/nanox.elf
 
 # Execute specific test:
 pytest --model nanox --path ./elfs/nanox.elf test_pubkey_cmd.py
-```
+```