Bump actions/cache from 4 to 5

Bumps [actions/cache](https://github.com/actions/cache) from 4 to 5.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v4...v5)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/bootstrap.yml

@@ -32,7 +32,7 @@ jobs:
           rm -rf ~/.config/cabal
           rm -rf ~/.cache/cabal
 
-      - uses: actions/cache@v4
+      - uses: actions/cache@v5
         name: Cache the downloads
         id: bootstrap-cache
         with:

.github/workflows/quick-jobs.yml

@@ -45,7 +45,7 @@ jobs:
       - name: Generate build plan for correct cache key
         run: ${{ env.cabal_build }} --dry-run
       - name: Restore cached dependencies
-        uses: actions/cache/restore@v4
+        uses: actions/cache/restore@v5
         id: cache
         with:
           path: ~/.local/state/cabal
@@ -62,7 +62,7 @@ jobs:
           git status > /dev/null
           git diff-files -p --exit-code
       - name: Cache dependencies
-        uses: actions/cache/save@v4
+        uses: actions/cache/save@v5
         if: always() && steps.cache.outputs.cache-hit != 'true'
         with:
           path: ~/.local/state/cabal
@@ -91,7 +91,7 @@ jobs:
         run: |
           echo "DATE=$(date +'%Y-%m-%d')" >> "${GITHUB_ENV}"
       - name: Restore cached dependencies
-        uses: actions/cache/restore@v4
+        uses: actions/cache/restore@v5
         id: cache
         with:
           path: ~/.local/state/cabal
@@ -106,7 +106,7 @@ jobs:
         run: make doctest
       - name: Cache dependencies
         if: always() && steps.cache.outputs.cache-hit != 'true'
-        uses: actions/cache/save@v4
+        uses: actions/cache/save@v5
         with:
           path: ~/.local/state/cabal
           key: ${{ steps.cache.outputs.cache-primary-key }}
@@ -133,7 +133,7 @@ jobs:
       - name: Generate build plan for correct cache key
         run: ${{ env.cabal_build }} --dry-run
       - name: Restore cached dependencies
-        uses: actions/cache/restore@v4
+        uses: actions/cache/restore@v5
         id: cache
         with:
           path: ~/.local/state/cabal
@@ -144,7 +144,7 @@ jobs:
       - name: Are buildinfo docs up to date?
         run: make doc/buildinfo-fields-reference.rst
       - name: Cache dependencies
-        uses: actions/cache/save@v4
+        uses: actions/cache/save@v5
         if: always() && steps.cache.outputs.cache-hit != 'true'
         with:
           path: ~/.local/state/cabal

.github/workflows/validate.yml

@@ -135,7 +135,7 @@ jobs:
 
       #  See the following link for a breakdown of the following step
       #  https://github.com/haskell/actions/issues/7#issuecomment-745697160
-      - uses: actions/cache@v4
+      - uses: actions/cache@v5
         with:
           # validate.sh uses a special build dir
           path: |
@@ -297,7 +297,7 @@ jobs:
       # As we are reusing the cached build dir from the previous step
       # the generated artifacts are available here,
       # including the cabal executable and the test suite
-      - uses: actions/cache@v4
+      - uses: actions/cache@v5
         with:
           path: |
             ${{ steps.setup-haskell.outputs.cabal-store }}
@@ -350,7 +350,7 @@ jobs:
 
       #  See the following link for a breakdown of the following step
       #  https://github.com/haskell/actions/issues/7#issuecomment-745697160
-      - uses: actions/cache@v4
+      - uses: actions/cache@v5
         with:
           # validate.sh uses a special build dir
           path: |