Fix release CI and bump version to 0.2.2 (#27)

Author: shsms

.github/workflows/release.yaml

@@ -70,7 +70,10 @@ jobs:
     permissions:
       id-token: write
     steps:
-      - uses: actions/checkout@v5
+      - name: Fetch sources
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
 
       - uses: rust-lang/crates-io-auth-action@b7e9a28eded4986ec6b1fa40eeee8f8f165559ec  # v1.0.3
         id: auth

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "frequenz-microgrid"
-version = "0.2.1"
+version = "0.2.2"
 edition = "2024"
 description = "A high-level interface to the Frequenz Microgrid API."
 repository = "https://github.com/frequenz-floss/frequenz-microgrid-rs"