Update the required libvalkey-py version to 4.0.0

Signed-off-by: Mikhail Koviazin <mikhail.koviazin@aiven.io>

Author: Mikhail Koviazin

.github/workflows/integration.yaml

@@ -76,7 +76,7 @@ jobs:
            pip install -r requirements.txt
            pip install -r dev_requirements.txt
            if [ "${{matrix.connection-type}}" == "libvalkey" ]; then
-            pip install "libvalkey>=4.0.0b1"
+            pip install "libvalkey>=4.0.0"
            fi
            invoke devenv
            sleep 10 # time to settle

setup.py

@@ -56,7 +56,7 @@
         "Programming Language :: Python :: Implementation :: PyPy",
     ],
     extras_require={
-        "libvalkey": ["libvalkey>=4.0.0b1"],
+        "libvalkey": ["libvalkey>=4.0.0"],
         "ocsp": ["cryptography>=36.0.1", "pyopenssl==23.2.1", "requests>=2.31.0"],
     },
 )