chore(deps): bump actions/cache from 2.1.4 to 2.1.6 (#338)

Bumps [actions/cache](https://github.com/actions/cache) from 2.1.4 to 2.1.6.
- [Release notes](https://github.com/actions/cache/releases)
- [Commits](actions/cache@v2.1.4...v2.1.6)

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/static.yml

@@ -24,7 +24,7 @@ jobs:
         id: composer-cache
         run: echo "::set-output name=dir::$(composer config cache-files-dir)"
       - name: Cache composer files
-        uses: actions/[email protected].4
+        uses: actions/[email protected].6
         with:
           path: ${{ steps.composer-cache.outputs.dir }}
           key: ${{ runner.os }}-composer-v4-${{ hashFiles('**/composer.json') }}-${{ matrix.php-version }}
@@ -59,7 +59,7 @@ jobs:
         id: composer-cache
         run: echo "::set-output name=dir::$(composer config cache-files-dir)"
       - name: Cache composer files
-        uses: actions/[email protected].4
+        uses: actions/[email protected].6
         with:
           path: ${{ steps.composer-cache.outputs.dir }}
           key: ${{ runner.os }}-composer-v4-${{ hashFiles('**/composer.json') }}-${{ matrix.php-version }}

.github/workflows/tests.yml

@@ -48,7 +48,7 @@ jobs:
         id: composer-cache
         run: echo "::set-output name=dir::$(composer config cache-files-dir)"
       - name: Cache composer files
-        uses: actions/[email protected].4
+        uses: actions/[email protected].6
         with:
           path: ${{ steps.composer-cache.outputs.dir }}
           key: ${{ runner.os }}-composer-v4-${{ hashFiles('**/composer.json') }}-${{ matrix.php-version }}-${{ matrix.laravel_version }}