Update all dependencies and GitHub Actions versions

Co-authored-by: doublegate <6858123+doublegate@users.noreply.github.com>

Author: Copilot

.github/workflows/ci.yml

@@ -59,7 +59,7 @@ jobs:
     if: ${{ !inputs.cache_key }}
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: dtolnay/rust-toolchain@stable
       with:
         components: rustfmt
@@ -76,7 +76,7 @@ jobs:
     if: ${{ !inputs.cache_key }}
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: dtolnay/rust-toolchain@stable
       with:
         components: clippy
@@ -103,7 +103,7 @@ jobs:
             rust: beta
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
 
     # Setup cross-platform helper functions
     - name: Load helper functions
@@ -268,7 +268,7 @@ jobs:
 
     - name: Download build artifacts (if available)
       if: inputs.cache_key != ''
-      uses: actions/download-artifact@v5
+      uses: actions/download-artifact@v6
       with:
         name: build-artifacts-${{ matrix.os }}
         path: target/
@@ -526,7 +526,7 @@ jobs:
     name: Minimum Supported Rust Version
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
 
     # Setup cross-platform helper functions
     - name: Load helper functions

.github/workflows/master-pipeline.yml

@@ -56,7 +56,7 @@ jobs:
       should_run_release: ${{ steps.config.outputs.should_run_release }}
       release_tag: ${{ steps.config.outputs.release_tag }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       # Setup cross-platform helper functions
       - name: Load helper functions
@@ -217,7 +217,7 @@ jobs:
 
       # Upload build artifacts for other jobs to use
       - name: Upload build artifacts
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: build-artifacts-${{ runner.os }}
           path: |
@@ -317,7 +317,7 @@ jobs:
     permissions:
       contents: read
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - uses: dtolnay/rust-toolchain@stable
         with:
@@ -393,7 +393,7 @@ jobs:
           EOF
 
       - name: Upload documentation artifacts
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: documentation
           path: target/doc/
@@ -428,7 +428,7 @@ jobs:
       contents: read
       id-token: write
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - uses: dtolnay/rust-toolchain@stable
 
@@ -500,7 +500,7 @@ jobs:
             artifact_name: rustirc-macos-arm64.tar.gz
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
@@ -549,7 +549,7 @@ jobs:
           7z a ../../../${{ matrix.artifact_name }} rustirc.exe
         shell: pwsh
       - name: Upload build artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: ${{ matrix.artifact_name }}
           path: ${{ matrix.artifact_name }}
@@ -571,12 +571,12 @@ jobs:
       contents: write
       discussions: write
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
       - name: Download artifacts
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           path: artifacts
 

.github/workflows/release.yml

@@ -71,7 +71,7 @@ jobs:
     permissions:
       contents: read
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
       with:
         fetch-depth: 0
 
@@ -120,7 +120,7 @@ jobs:
       shell: bash
 
     - name: Upload artifact
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@v5
       with:
         name: ${{ matrix.asset_name }}
         path: |
@@ -138,12 +138,12 @@ jobs:
       contents: write
       discussions: write
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
       with:
         fetch-depth: 0
 
     - name: Download all artifacts
-      uses: actions/download-artifact@v5
+      uses: actions/download-artifact@v6
       with:
         path: artifacts
 

.github/workflows/security-audit.yml

@@ -52,7 +52,7 @@ jobs:
       actions: read
     steps:
     - name: Checkout code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         fetch-depth: 0
 
@@ -211,7 +211,7 @@ jobs:
         echo "count=$total" >> $GITHUB_OUTPUT
 
     - name: Upload audit results as artifact
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@v5
       if: always()
       with:
         name: security-audit-results
@@ -245,7 +245,7 @@ jobs:
       pull-requests: write
     steps:
     - name: Checkout code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Dependency Review
       uses: actions/dependency-review-action@v4