fix: publish unstable with node 18.x only

Author: mate-from-mattr

.github/workflows/push-master.yml

@@ -10,14 +10,11 @@ jobs:
     name: Build, test, and publish unstable release
     if: "contains(github.event.head_commit.message, 'chore(release): publish')"
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        node-version: [14.x, 16.x, 18.x]
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v1
         with:
-          node-version: ${{ matrix.node-version }}
+          node-version: 18.x
       - run: yarn
       - run: yarn install --frozen-lockfile
       - run: yarn lint