chore(deps): bump actions/cache from 5 to 6

Bumps [actions/cache](https://github.com/actions/cache) from 5 to 6.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v5...v6)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/ci-static-analysis.yml

@@ -33,7 +33,7 @@ jobs:
 
       - name: Cache pip dependencies
         id: cache-dependencies
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: ${{ steps.pip-cache-dir.outputs.dir }}
           key: ${{ runner.os }}-pip-${{ hashFiles('requirements/edx/development.txt') }}

.github/workflows/js-tests.yml

@@ -55,7 +55,7 @@ jobs:
 
       - name: Cache pip dependencies
         id: cache-dependencies
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: ${{ steps.pip-cache-dir.outputs.dir }}
           key: ${{ runner.os }}-pip-${{ hashFiles('requirements/edx/base.txt') }}

.github/workflows/lint-imports.yml

@@ -33,7 +33,7 @@ jobs:
 
       - name: Cache pip dependencies
         id: cache-dependencies
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: ${{ steps.pip-cache-dir.outputs.dir }}
           key: ${{ runner.os }}-pip-${{ hashFiles('requirements/edx/development.txt') }}

.github/workflows/migrations-check.yml

@@ -90,7 +90,7 @@ jobs:
 
       - name: Cache pip dependencies
         id: cache-dependencies
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: ${{ steps.pip-cache-dir.outputs.dir }}
           key: ${{ runner.os }}-pip-${{ hashFiles('requirements/edx/development.txt') }}

.github/workflows/pylint-checks.yml

@@ -49,7 +49,7 @@ jobs:
 
       - name: Cache pip dependencies
         id: cache-dependencies
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: ${{ steps.pip-cache-dir.outputs.dir }}
           key: ${{ runner.os }}-pip-${{ hashFiles('requirements/edx/development.txt') }}

.github/workflows/quality-checks.yml

@@ -50,7 +50,7 @@ jobs:
 
       - name: Cache pip dependencies
         id: cache-dependencies
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: ${{ steps.pip-cache-dir.outputs.dir }}
           key: ${{ runner.os }}-pip-${{ hashFiles('requirements/edx/testing.txt') }}

.github/workflows/static-assets-check.yml

@@ -63,7 +63,7 @@ jobs:
 
       - name: Cache pip dependencies
         id: cache-dependencies
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: ${{ steps.pip-cache-dir.outputs.dir }}
           key: ${{ runner.os }}-pip-${{ hashFiles('requirements/edx/development.txt') }}