ci: build undici with node.js v26 (#5237)

Signed-off-by: Shivam Sharma <meshivam81@gmail.com>

Author: shivarm

.github/workflows/ci.yml

@@ -63,7 +63,7 @@ jobs:
         runs-on: ['ubuntu-latest', 'windows-latest', 'macos-latest']
     uses: ./.github/workflows/nodejs.yml
     with:
-      codecov: ${{ (matrix.node-version == '24' || matrix.node-version == '25') && matrix.runs-on == 'ubuntu-latest' }}
+      codecov: ${{ (matrix.node-version == '24' || matrix.node-version == '25' || matrix.node-version == '26') && matrix.runs-on == 'ubuntu-latest' }}
       node-version: ${{ matrix.node-version }}
       runs-on: ${{ matrix.runs-on }}
     secrets: inherit
@@ -89,7 +89,7 @@ jobs:
       fail-fast: false
       max-parallel: 0
       matrix:
-        node-version: ['22', '24', '25']
+        node-version: ['22', '24', '25', '26']
     runs-on: ubuntu-latest
     timeout-minutes: 120
     steps:
@@ -175,7 +175,7 @@ jobs:
       fail-fast: false
       max-parallel: 0
       matrix:
-        node-version: ['22', '24', '25']
+        node-version: ['22', '24', '25', '26']
     runs-on: ubuntu-latest
     timeout-minutes: 120
     steps:

package-lock.json

@@ -116,7 +116,7 @@
     "@types/node": "^22.0.0",
     "abort-controller": "^3.0.0",
     "borp": "^1.0.0",
-    "c8": "^11.0.0",
+    "c8": "^12.0.0",
     "cross-env": "^10.0.0",
     "dns-packet": "^5.4.0",
     "esbuild": "^0.28.0",