minor: moving test results under ~/.cache

Author: AlphaJack

.github/workflows/from_commit_to_build_test.yml

@@ -79,5 +79,5 @@ jobs:
         if: ${{ env.ACT == '' }}
         with:
           name: coverage-reports
-          path: /home/runner/rusticlone-tests/coverage/
+          path: /home/runner/.cache/rusticlone-tests/coverage/
           retention-days: 30

tests/tests.sh

@@ -35,7 +35,7 @@ set -euo pipefail
 RUSTIC_PROFILES_DIR="$HOME/.config/rustic"
 
 # can be any folder
-RUSTICLONE_TEST_DIR="$HOME/.rusticlone-tests"
+RUSTICLONE_TEST_DIR="$HOME/.cache/rusticlone-tests"
 
 # ################################ DERIVED