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/Build-Test-And-Deploy.yml

@@ -33,7 +33,7 @@ jobs:
           cache-dependency-path: EssentialCSharp.Web/package-lock.json
 
       - name: Set up dependency caching for faster builds
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         id: nuget-cache
         with:
           path: |
@@ -65,7 +65,7 @@ jobs:
         id: buildx
 
       - name: Restore BuildKit cache mounts
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         id: buildkit-cache
         with:
           path: buildkit-cache

.github/workflows/PR-Build-And-Test.yml

@@ -38,7 +38,7 @@ jobs:
           global-json-file: global.json
 
       - name: Set up dependency caching for faster builds
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         id: nuget-cache
         with:
           path: |
@@ -85,7 +85,7 @@ jobs:
         id: buildx
 
       - name: Restore BuildKit cache mounts
-        uses: actions/cache/restore@v5
+        uses: actions/cache/restore@v6
         id: buildkit-cache
         with:
           path: buildkit-cache

.github/workflows/codeql.yml

@@ -37,7 +37,7 @@ jobs:
       uses: actions/setup-dotnet@v5
 
     - name: Set up dependency caching for faster builds
-      uses: actions/cache@v5
+      uses: actions/cache@v6
       id: nuget-cache
       with:
         path: |

.github/workflows/copilot-setup-steps.yml

@@ -34,7 +34,7 @@ jobs:
           node-version: '24'
 
       - name: Set up dependency caching for faster builds
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         id: nuget-cache
         with:
           path: |