Replace macos-10.15 with macos-12

Signed-off-by: Derek Nola <derek.nola@suse.com>

.github/workflows/install.yaml

@@ -18,7 +18,7 @@ jobs:
   test:
     name: "Smoke Test"
     # nested virtualization is only available on macOS hosts
-    runs-on: macos-10.15
+    runs-on: macos-12
     timeout-minutes: 40
     strategy:
       fail-fast: false

tests/vagrant/install/centos-7/README.md

@@ -8,7 +8,7 @@ as a stand-in for [RHEL 7](https://access.redhat.com/documentation/en-us/red_hat
 
 The [Vagrant box](https://app.vagrantup.com/dweomer/boxes/centos-7.9-amd64) used for this test supports these providers:
 - `libvirt`
-- `virtualbox` (the default for most installations, including `macos-10.15` github actions runners)
+- `virtualbox` (the default for most installations, including `macos-12` github actions runners)
 - `vmware_desktop`
 
 To spin up a VM to test a locally modified `install.sh`:

tests/vagrant/install/opensuse-microos/README.md

@@ -8,7 +8,7 @@ as a stand-in for [SUSE Linux Enterprise Micro](https://www.suse.com/products/mi
 
 The [Vagrant box](https://app.vagrantup.com/dweomer/boxes/microos.amd64) used for this test supports these providers:
 - `libvirt`
-- `virtualbox` (the default for most installations, including `macos-10.15` github actions runners)
+- `virtualbox` (the default for most installations, including `macos-12` github actions runners)
 - `vmware_desktop`
 
 To spin up a VM to test a locally modified `install.sh`:

tests/vagrant/install/rocky-8/README.md

@@ -8,7 +8,7 @@ as a stand-in for [RHEL 8](https://access.redhat.com/documentation/en-us/red_hat
 
 The [Vagrant box](https://app.vagrantup.com/generic/boxes/rocky8) used for this test supports these providers:
 - `libvirt`
-- `virtualbox` (the default for most installations, including `macos-10.15` github actions runners)
+- `virtualbox` (the default for most installations, including `macos-12` github actions runners)
 - `vmware_desktop`
 - `hyperv`
 - `parallels`

tests/vagrant/install/ubuntu-focal/README.md

@@ -9,7 +9,7 @@ The [Vagrant box](https://app.vagrantup.com/generic/boxes/ubuntu2004) used for t
 - `hyperv`
 - `libvirt`
 - `parallels`
-- `virtualbox` (the default for most installations, including `macos-10.15` github actions runners)
+- `virtualbox` (the default for most installations, including `macos-12` github actions runners)
 - `vmware_desktop`
 
 To spin up a VM to test a locally modified `install.sh`:

tests/vagrant/install/windows-2019/README.md

@@ -8,7 +8,7 @@ Asserting correctness of the RKE2 installer script on [Windows Server 2019](http
 The [Vagrant box](https://app.vagrantup.com/jborean93/boxes/WindowsServer2019) used for this test supports these providers:
 - `hyperv`
 - `libvirt`
-- `virtualbox` (the default for most installations, including `macos-10.15` github actions runners)
+- `virtualbox` (the default for most installations, including `macos-12` github actions runners)
 
 To spin up a VM to test a locally modified `install.ps1`:
 ```shell

tests/vagrant/install/windows-2022/README.md

@@ -8,7 +8,7 @@ Asserting correctness of the RKE2 installer script on [Windows Server 2022](http
 The [Vagrant box](https://app.vagrantup.com/jborean93/boxes/WindowsServer2022) used for this test supports these providers:
 - `hyperv`
 - `libvirt`
-- `virtualbox` (the default for most installations, including `macos-10.15` github actions runners)
+- `virtualbox` (the default for most installations, including `macos-12` github actions runners)
 
 To spin up a VM to test a locally modified `install.ps1`:
 ```shell