build(issue-35): downgrade octokit to 18.12.0 (#36)

Fix https://github.com/lampajr/backporting/issues/35 by downgrading
octokit/rest to 18.12.0 as it seems that mock-github has some issues
when node ^18 and octokit ^19

.github/workflows/ci.yml

@@ -10,9 +10,10 @@ on:
 
 jobs:
   build-and-test:
+    name: ${{ matrix.os }} - node ${{ matrix.node-version }}
     strategy:
       matrix:
-        node-version: [16]
+        node-version: [16, 18]
         os: [ubuntu-latest]
       fail-fast: true
     runs-on: ${{ matrix.os }}

.github/workflows/pull-request.yml

@@ -1,15 +1,16 @@
 # This workflow will do a clean install of node dependencies, build the source code and run tests across different versions of node
 # For more information see: https://help.github.com/actions/language-and-framework-guides/using-nodejs-with-github-actions
 
-name: "Pull Request Checks"
+name: "Pull Request Check"
 
 on: pull_request
 
 jobs:
   build:
+    name: ${{ matrix.os }} - node ${{ matrix.node-version }}
     strategy:
       matrix:
-        node-version: [16]
+        node-version: [16, 18]
         os: [ubuntu-latest]
       fail-fast: false
     runs-on: ${{ matrix.os }}