chore: only test in node 18 for now

Author: lukekarrys

.github/workflows/audit.yml

@@ -27,8 +27,8 @@ jobs:
         uses: actions/setup-node@v3
         id: node
         with:
-          node-version: 20.x
-          check-latest: contains('20.x', '.x')
+          node-version: 18.x
+          check-latest: contains('18.x', '.x')
 
       # node 10/12/14 ship with npm@6, which is known to fail when updating itself in windows
       - name: Update Windows npm

.github/workflows/ci-release.yml

@@ -82,8 +82,8 @@ jobs:
         uses: actions/setup-node@v3
         id: node
         with:
-          node-version: 20.x
-          check-latest: contains('20.x', '.x')
+          node-version: 18.x
+          check-latest: contains('18.x', '.x')
 
       # node 10/12/14 ship with npm@6, which is known to fail when updating itself in windows
       - name: Update Windows npm
@@ -165,7 +165,6 @@ jobs:
           - 16.x
           - 18.0.0
           - 18.x
-          - 20.x
     runs-on: ${{ matrix.platform.os }}
     defaults:
       run:

.github/workflows/ci.yml

@@ -31,8 +31,8 @@ jobs:
         uses: actions/setup-node@v3
         id: node
         with:
-          node-version: 20.x
-          check-latest: contains('20.x', '.x')
+          node-version: 18.x
+          check-latest: contains('18.x', '.x')
 
       # node 10/12/14 ship with npm@6, which is known to fail when updating itself in windows
       - name: Update Windows npm
@@ -107,7 +107,6 @@ jobs:
           - 16.x
           - 18.0.0
           - 18.x
-          - 20.x
     runs-on: ${{ matrix.platform.os }}
     defaults:
       run:

.github/workflows/post-dependabot.yml

@@ -28,8 +28,8 @@ jobs:
         uses: actions/setup-node@v3
         id: node
         with:
-          node-version: 20.x
-          check-latest: contains('20.x', '.x')
+          node-version: 18.x
+          check-latest: contains('18.x', '.x')
 
       # node 10/12/14 ship with npm@6, which is known to fail when updating itself in windows
       - name: Update Windows npm

.github/workflows/pull-request.yml

@@ -31,8 +31,8 @@ jobs:
         uses: actions/setup-node@v3
         id: node
         with:
-          node-version: 20.x
-          check-latest: contains('20.x', '.x')
+          node-version: 18.x
+          check-latest: contains('18.x', '.x')
 
       # node 10/12/14 ship with npm@6, which is known to fail when updating itself in windows
       - name: Update Windows npm

.github/workflows/release.yml

@@ -44,8 +44,8 @@ jobs:
         uses: actions/setup-node@v3
         id: node
         with:
-          node-version: 20.x
-          check-latest: contains('20.x', '.x')
+          node-version: 18.x
+          check-latest: contains('18.x', '.x')
 
       # node 10/12/14 ship with npm@6, which is known to fail when updating itself in windows
       - name: Update Windows npm
@@ -201,8 +201,8 @@ jobs:
         uses: actions/setup-node@v3
         id: node
         with:
-          node-version: 20.x
-          check-latest: contains('20.x', '.x')
+          node-version: 18.x
+          check-latest: contains('18.x', '.x')
 
       # node 10/12/14 ship with npm@6, which is known to fail when updating itself in windows
       - name: Update Windows npm

package.json

@@ -29,7 +29,8 @@
   "templateOSS": {
     "//@npmcli/template-oss": "This file is partially managed by @npmcli/template-oss. Edits may be overwritten.",
     "version": "4.19.0",
-    "publish": "true"
+    "publish": "true",
+    "latestCiVersion": 18
   },
   "dependencies": {
     "http-proxy-agent": "^7.0.0",