Update GitHub actions to Node.js 20

This commit updates the following workflows that used Node.js 16 to a
newer version that uses Node.js 20:

* actions/cache
* codecov/codecov-action
* Vampire/setup-wsl

.github/workflows/linux-32bit-build-and-test.yaml

@@ -84,7 +84,7 @@ jobs:
     # leading to a tainted cache
     - name: Cache PostgreSQL ${{ matrix.pg }} ${{ matrix.build_type }}
       id: cache-postgresql
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: ~/${{ env.PG_SRC_DIR }}
         key: "linux-32-bit-postgresql-${{ matrix.pg }}-${{ matrix.cc }}\

.github/workflows/linux-build-and-test.yaml

@@ -101,7 +101,7 @@ jobs:
     - name: Cache PostgreSQL ${{ matrix.pg }} ${{ matrix.build_type }}
       id: cache-postgresql
       if: matrix.snapshot != 'snapshot'
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: ~/${{ env.PG_SRC_DIR }}
         key: "${{ matrix.os }}-postgresql-${{ matrix.pg }}-${{ matrix.cc }}\
@@ -181,7 +181,7 @@ jobs:
 
     - name: Send coverage report to Codecov.io app
       if: matrix.coverage
-      uses: codecov/codecov-action@v3
+      uses: codecov/codecov-action@v4
       with:
         file: ./build/codecov/timescaledb-codecov.info
 

.github/workflows/sanitizer-build-and-test.yaml

@@ -101,7 +101,7 @@ jobs:
     # leading to a tainted cache
     - name: Cache PostgreSQL ${{ matrix.pg }}
       id: cache-postgresql
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: ~/${{ env.PG_SRC_DIR }}
         key: "${{ matrix.os }}-${{ env.name }}-postgresql-${{ matrix.pg }}-${{ env.CC }}\

.github/workflows/windows-build-and-test.yaml

@@ -73,7 +73,7 @@ jobs:
       TABLESPACE2: D:\tablespace2\
     steps:
     - name: Setup WSL
-      uses: Vampire/setup-wsl@v2
+      uses: Vampire/setup-wsl@v3
       with:
         additional-packages:
           cmake
@@ -115,7 +115,7 @@ jobs:
       # --extract-only and launch our own test instance, which is
       # probably better anyway since it gives us more control.
     - name: Cache PostgreSQL installation
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       id: cache-postgresql
       with:
         path: ~\PostgreSQL\${{ matrix.pg }}