Use ubuntu-latest workers for releases

Author: lnicola

src/tools/rust-analyzer/.github/workflows/release.yaml

@@ -34,14 +34,14 @@ jobs:
           - os: windows-latest
             target: aarch64-pc-windows-msvc
             code-target: win32-arm64
-          - os: ubuntu-20.04
+          - os: ubuntu-latest
             target: x86_64-unknown-linux-gnu
             code-target: linux-x64
             container: rockylinux:8
-          - os: ubuntu-20.04
+          - os: ubuntu-latest
             target: aarch64-unknown-linux-gnu
             code-target: linux-arm64
-          - os: ubuntu-20.04
+          - os: ubuntu-latest
             target: arm-unknown-linux-gnueabihf
             code-target: linux-armhf
           - os: macos-13