ci: use checkout v4, silence node 16 warnings

.github/workflows/binaries-linux-x64.yml

@@ -25,7 +25,7 @@ jobs:
     steps:
 
     - name: Check out
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       # have to fetch everything for git describe for --version
       with: 
         fetch-depth: 0  

.github/workflows/binaries-mac-arm64.yml

@@ -42,7 +42,7 @@ jobs:
     steps:
 
     - name: Check out
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       # have to fetch everything for git describe for --version
       with: 
         fetch-depth: 0        

.github/workflows/binaries-mac-x64.yml

@@ -42,7 +42,7 @@ jobs:
     steps:
 
     - name: Check out
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       # have to fetch everything for git describe for --version
       with: 
         fetch-depth: 0        

.github/workflows/binaries-windows-x64.yml

@@ -24,7 +24,7 @@ jobs:
     steps:
 
     - name: Check out
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       # have to fetch everything for git describe for --version
       with: 
         fetch-depth: 0

.github/workflows/ci.yml

@@ -81,7 +81,7 @@ jobs:
     steps:
 
     - name: Check out
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       # have to fetch everything for git describe for hledger's --version
       with: 
         fetch-depth: 0