chore(deps): update actions/cache action to v6

Author: renovate[bot]

.github/workflows/pre-commit.yml

@@ -21,7 +21,7 @@ jobs:
               env:
                   CACHE_KEY_PREFIX: deps-${{ github.workflow }}-${{ github.job }}-${{ runner.os }}
                   CACHE_KEY_DEPS: ${{ hashFiles('uv.lock', '.pre-commit-config.yaml') }}
-              uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
+              uses: actions/cache@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
               with:
                   path: |
                       ~/.cache/pre-commit

.github/workflows/test-reproducibility.yml

@@ -18,7 +18,7 @@ jobs:
               env:
                   CACHE_KEY_PREFIX: venv-${{ github.workflow }}-${{ github.job }}-${{ runner.os }}
                   CACHE_KEY_DEPS: ${{ hashFiles('uv.lock') }}
-              uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
+              uses: actions/cache@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
               with:
                   path: |
                       ~/.local/share/uv
@@ -40,7 +40,7 @@ jobs:
               id: cache-graphviz
               env:
                   CACHE_KEY_PREFIX: graphviz-${{ github.workflow }}-${{ github.job }}-${{ runner.os }}
-              uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
+              uses: actions/cache@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
               with:
                   path: ~/graphviz-cache
                   key: ${{ env.CACHE_KEY_PREFIX }}-${{ github.run_id }}-${{ github.run_attempt }}

.github/workflows/test.yml

@@ -39,7 +39,7 @@ jobs:
               env:
                   CACHE_KEY_PREFIX: venv-${{ github.workflow }}-${{ github.job }}-${{ runner.os }}-py${{ matrix.python-version }}
                   CACHE_KEY_DEPS: ${{ hashFiles('uv.lock') }}
-              uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
+              uses: actions/cache@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
               with:
                   path: |
                       ~/.local/share/uv
@@ -61,7 +61,7 @@ jobs:
               id: cache-graphviz
               env:
                   CACHE_KEY_PREFIX: graphviz-${{ github.workflow }}-${{ github.job }}-${{ runner.os }}
-              uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
+              uses: actions/cache@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
               with:
                   path: ~/graphviz-cache
                   key: ${{ env.CACHE_KEY_PREFIX }}-${{ github.run_id }}-${{ github.run_attempt }}