DEV: Update CI workflows (#25)

Co-authored-by: discoursebuild <build@discourse.org>

Author: discoursebot

.github/workflows/component-tests.yml

@@ -28,7 +28,7 @@ jobs:
  shell: bash
  run: |
  if [ 0 -lt $(find tmp/component/test -type f \( -name "*.js" -or -name "*.es6" \) 2> /dev/null | wc -l) ]; then
- echo "::set-output name=tests_exist::true"
+ echo "tests_exist=true" >> $GITHUB_OUTPUT
  fi
 
  test:
@@ -94,7 +94,7 @@ jobs:
 
  - name: Get yarn cache directory
  id: yarn-cache-dir
- run: echo "::set-output name=dir::$(yarn cache dir)"
+ run: echo "dir=$(yarn cache dir)" >> $GITHUB_OUTPUT
 
  - name: Yarn cache
  uses: actions/cache@v3