ci: Switch to npx because yarn global add requires more setup

mrchief · mrchief · commit ee752c6e9159 · 2020-07-14T17:21:53.000-04:00
```
/home/runner/work/_temp/3e84396b-a585-4933-994a-8886a8cb901d.sh: line 1: semantic-release: command not found
```
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
@@ -21,4 +21,4 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
-        run: yarn global add semantic-release && semantic-release
+        run: npx semantic-release
