dev: bump Alire version to 2.1.1 and setup-alire to @latest (#1942)

* dev: bump Alire to 2.1.1 and setup-alire to @latest

* Touch libhello

.github/workflows/build-ports.yml

@@ -9,7 +9,7 @@ name: Build Crate (MacPorts)
 env:
   CHECKS_ORG: alire-project
   CHECKS_REPO: alire-index-checks
-  ALR_VERSION: 2.1.0
+  ALR_VERSION: 2.1.1
 
 on:
   pull_request:
@@ -50,7 +50,7 @@ jobs:
         path: ${{env.CHECKS_REPO}}
 
     - name: Set up stable `alr`
-      uses: alire-project/setup-alire@v5
+      uses: alire-project/setup-alire@latest
       with:
         version: ${{env.ALR_VERSION}}