Update actions/cache action to v5

Author: dependencyupdates[bot]

.github/workflows/build-samples-and-snippets.yml

@@ -21,7 +21,7 @@ jobs:
         uses: microsoft/setup-msbuild@v2
       - name: Restore NuGet Cache
         id: nuget-cache-restore
-        uses: actions/cache/restore@v4
+        uses: actions/cache/restore@v5
         with:
           path: ~/.nuget/packages
           key: ${{ runner.os }}-nuget-${{ hashFiles('**/*.csproj') }}
@@ -32,7 +32,7 @@ jobs:
       - name: Save NuGet Cache
         id: nuget-cache-save
         if: always() && steps.nuget-cache-restore.outputs.cache-hit != 'true'
-        uses: actions/cache/save@v4
+        uses: actions/cache/save@v5
         with:
           path: ~/.nuget/packages
           key: ${{ steps.nuget-cache-restore.outputs.cache-primary-key }}

.github/workflows/validate-pull-requests.yml

@@ -20,7 +20,7 @@ jobs:
            curl --connect-timeout 5 --max-time 15 --silent --show-error https://s3.amazonaws.com/particular.downloads/Particular.DocsTool/version.json >> docstool-version.json
       - name: Cache docstool
         id: cache-docstool
-        uses: actions/cache@v4.2.4
+        uses: actions/cache@v5.0.1
         with:
           path: |
              ~/.dotnet/tools/docstool

.github/workflows/verify-master.yml

@@ -23,7 +23,7 @@ jobs:
            curl --connect-timeout 5 --max-time 15 --silent --show-error https://f.feedz.io/particular-software/packages/nuget/v3/packages/particular.docstool/index.json >> docstool-versions.json
       - name: Cache docstool
         id: cache-docstool
-        uses: actions/cache@v4.2.4
+        uses: actions/cache@v5.0.1
         with:
           path: |
              ~/.dotnet/tools/docstool