chore(deps): update actions/checkout action to v7

.github/workflows/backport.yml

@@ -20,7 +20,7 @@ jobs:
     if: github.repository_owner == 'PrismLauncher' && github.event.pull_request.merged == true && (github.event_name != 'labeled' || startsWith('backport', github.event.label.name))
     runs-on: ubuntu-slim
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
         with:
           ref: ${{ github.event.pull_request.head.sha }}
       - name: Create backport PRs

.github/workflows/build.yml

@@ -104,7 +104,7 @@ jobs:
       ##
 
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
         with:
           submodules: true
 

.github/workflows/clang-tidy.yml

@@ -23,7 +23,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
         with:
           fetch-depth: 0 # Required for diffing later on
           submodules: "true"

.github/workflows/codeql.yml

@@ -22,7 +22,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
         with:
           submodules: "true"
 

.github/workflows/container.yml

@@ -51,7 +51,7 @@ jobs:
           github-token: ${{ github.token }}
 
       - name: Checkout repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Determine metadata for image
         id: image-metadata

.github/workflows/nix.yml

@@ -95,7 +95,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Install Nix
         uses: cachix/install-nix-action@v31

.github/workflows/release.yml

@@ -31,7 +31,7 @@ jobs:
       upload_url: ${{ steps.create_release.outputs.upload_url }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
         with:
           submodules: "true"
           path: "PrismLauncher-source"

.github/workflows/update-flake.yml

@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-slim
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: cachix/install-nix-action@8aa03977d8d733052d78f4e008a241fd1dbf36b3 # v31
 
       - uses: DeterminateSystems/update-flake-lock@v28