tests: cache and verify hash value of sample images

Author: henryborchers

.github/workflows/build_wheels.yml

@@ -60,7 +60,7 @@ jobs:
 #        uses: pypa/cibuildwheel@v2.11.2
         env:
            CONAN_COMPILER_VERSION: ${{ matrix.compiler_version }}
-           SAMPLE_IMAGES_ARCHIVE: "{{ github.workspace }}/sampledata/sample_images.tar.gz"
+           SAMPLE_IMAGES_ARCHIVE: "${{ github.workspace }}/sampledata/sample_images.tar.gz"
 
         #   CIBW_SOME_OPTION: value
       - uses: actions/upload-artifact@v4

.github/workflows/tox_matrix.yml

@@ -63,7 +63,7 @@ jobs:
         id: cache
         with:
           path: "${{ matrix.conan_user_home }}/.conan2"
-          key: ${{ runner.os }}-${{ hashFiles('**/conanfile.py') }}
+          key: ${{ runner.os }}-${{ hashFiles('**/conanfile.py', 'conan.lock') }}
 
       - name: Build conan packages on Non-Windows Operating Systems
         if: ${{ !contains(matrix.os, 'windows') && steps.cache.outputs.cache-hit != 'true' }}
@@ -88,10 +88,11 @@ jobs:
           "C:\Program Files\Microsoft Visual Studio\2022\Enterprise\Common7\Tools\VsDevCmd.bat" -arch=amd64 && uv run --only-group tox --with tox-uv tox -e ${{ steps.tox-env.outputs.result }}
         env:
           CONAN_USER_HOME: ${{ matrix.conan_user_home }}
+          SAMPLE_IMAGES_ARCHIVE: "${{ github.workspace }}/sampledata/sample_images.tar.gz"
       - name: Run tox
         if: "!contains(matrix.os, 'windows')"
         run: cc --version &&  cc -dumpfullversion -dumpversion && uv run --only-group tox --with tox-uv tox -e ${{ steps.tox-env.outputs.result }} -vvv
         env:
           CONAN_COMPILER_LIBCXX: ${{ matrix.compiler_libcxx }}
           CONAN_USER_HOME: ${{ matrix.conan_user_home }}
-          SAMPLE_IMAGES_ARCHIVE: "{{ github.workspace }}/sampledata/sample_images.tar.gz"
+          SAMPLE_IMAGES_ARCHIVE: "${{ github.workspace }}/sampledata/sample_images.tar.gz"