Update actions/cache action to v3 (#29)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/ci.yml

@@ -87,7 +87,7 @@ jobs:
             ${{ runner.os }}-gradle-
 
       - name: Cache Konan
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         if: startsWith(matrix.config.os, 'macos')
         with:
           path: |

.github/workflows/publish.yml

@@ -34,7 +34,7 @@ jobs:
             ${{ runner.os }}-gradle-
 
       - name: Cache Konan
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         with:
           path: |
             ~/.konan/caches