Hardcode minor version for Windows builds

Since new versions of PostgreSQL can potentially break our CI and block
development so we hardcode the version that we test against.

For nightly builds, we do not give the exact version but will pull the
latest minor version for the major version.

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

@@ -56,6 +56,15 @@ jobs:
         tsl_ignores: ["compression_algos"]
         tsl_skips: ["bgw_db_scheduler bgw_db_scheduler_fixed"]
         pg_config: ["-cfsync=off -cstatement_timeout=60s"]
+        include:
+          - pg: 14
+            pg_version: 14.13
+          - pg: 15
+            pg_version: 15.8
+          - pg: 16
+            pg_version: 16.4
+          - pg: 17
+            pg_version: 17.0
     env:
       # PostgreSQL configuration
       PGPORT: 55432
@@ -115,18 +124,22 @@ jobs:
 
     # Force install PostgreSQL 17 since the package still on moderation
     # https://community.chocolatey.org/packages/postgresql17
+    - name: Install PostgreSQL ${{ matrix.pg }} (using ${{ matrix.pg_version }})
+      if: github.event_name != 'schedule' && steps.cache-postgresql.outputs.cache-hit != 'true'
+      run: |
+        choco feature disable --name=usePackageExitCodes
+        choco feature disable --name=showDownloadProgress
+        choco install postgresql${{ matrix.pg }} --version ${{ matrix.pg_version }} `
+          --force -y --install-args="'--prefix $HOME\PostgreSQL\${{ matrix.pg }} --extract-only yes'"
+
+    # This is for nightly builds. Here we pick the latest version of the package.
     - name: Install PostgreSQL ${{ matrix.pg }}
-      if: steps.cache-postgresql.outputs.cache-hit != 'true'
+      if: github.event_name == 'schedule' && steps.cache-postgresql.outputs.cache-hit != 'true'
       run: |
         choco feature disable --name=usePackageExitCodes
         choco feature disable --name=showDownloadProgress
-        if(${{ matrix.pg }} -eq 17) {
-          choco install postgresql${{ matrix.pg }} --version 17.0.0 `
-            --force -y --install-args="'--prefix $HOME\PostgreSQL\${{ matrix.pg }} --extract-only yes'"
-        } else {
-          choco install postgresql${{ matrix.pg }} `
-            --force -y --install-args="'--prefix $HOME\PostgreSQL\${{ matrix.pg }} --extract-only yes'"
-        }
+        choco install postgresql${{ matrix.pg }} `
+          --force -y --install-args="'--prefix $HOME\PostgreSQL\${{ matrix.pg }} --extract-only yes'"
 
     - name: Configure TimescaleDB
       run: cmake -B build_win -DCMAKE_BUILD_TYPE=${{ matrix.build_type }} `