Add excluded files from "exports", tweak tests workflow

.gitattributes

@@ -1 +1,10 @@
-* text=auto
+* text=auto
+
+*.md diff=markdown
+*.php diff=php
+
+/.github export-ignore
+/.gitpod export-ignore
+.gitattributes export-ignore
+.gitpod.yml export-ignore
+CHANGELOG.md export-ignore

.github/workflows/tests.yml

@@ -65,13 +65,13 @@ jobs:
         run: php ./.github/workflows/utilities/library-switcher "1.2.x-dev as 1.2"
 
       - name: Setup dependency cache
-        id: composercache
-        run: echo "::set-output name=dir::$(composer config cache-files-dir)"
+        id: composer-cache
+        run: echo "dir=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT
 
       - name: Cache dependencies
         uses: actions/cache@v3
         with:
-          path: ${{ steps.composercache.outputs.dir }}
+          path: ${{ steps.composer-cache.outputs.dir }}
           key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.json') }}
           restore-keys: ${{ runner.os }}-composer-
 
@@ -133,9 +133,6 @@ jobs:
           php-version: ${{ matrix.phpVersion }}
           extensions: ${{ env.extensions }}
 
-      - name: Echo branches
-        run: echo "${{ github.ref }} | ${{ github.head_ref }} | ${{ github.ref_name }} | ${{ github.base_ref }}"
-
       - name: Switch library dependency (develop)
         if: github.ref == 'refs/heads/develop' || github.base_ref == 'develop'
         run: php ./.github/workflows/utilities/library-switcher "dev-develop as 1.2"
@@ -153,13 +150,13 @@ jobs:
         run: php ./.github/workflows/utilities/library-switcher "1.2.x-dev as 1.2"
 
       - name: Setup dependency cache
-        id: composercache
-        run: echo "::set-output name=dir::$(composer config cache-files-dir)"
+        id: composer-cache
+        run: echo "dir=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT
 
       - name: Cache dependencies
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         with:
-          path: ${{ steps.composercache.outputs.dir }}
+          path: ${{ steps.composer-cache.outputs.dir }}
           key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.json') }}
           restore-keys: ${{ runner.os }}-composer-