[elpa] externals/csharp-mode 256a638 357/459: Update build.yml

[ELPA Syncer]

branch: externals/csharp-mode
commit 256a6388ae79892695e3dc560fdd3f9a411a616b
Author: Jostein Kjønigsen <jostein@kjonigsen.net>
Commit: GitHub <noreply@github.com>

    Update build.yml
    
    Fix missing cask.
---
 .github/workflows/build.yml | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 160c778..3527fee 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -51,8 +51,10 @@ jobs:
           export PATH="$HOME/.evm/bin:$PATH"
           evm install ${{ matrix.emacs }} --use --skip
 
-      - name: Test cask
-        run: cask
+      - name: Install cask
+        run: |
+          curl -fsSL https://raw.githubusercontent.com/cask/cask/master/go | 
python
+          cask
 
       - name: Run a multi-line script
         run: |