Try getting an older version of llvm for windows builds

.github/workflows/verible-ci.yml

@@ -24,6 +24,7 @@ jobs:
   VerifyFormatting:
     container: ubuntu:jammy
     runs-on: [self-hosted, Linux, X64, gcp-custom-runners]
+    if: false   # Currently disabled to test windows build
 
     steps:
 
@@ -58,6 +59,7 @@ jobs:
   ClangTidy:
     container: ubuntu:jammy
     runs-on: [self-hosted, Linux, X64, gcp-custom-runners]
+    if: false   # Currently disabled to test windows build
 
     env:
       GHA_MACHINE_TYPE: "n2-standard-4"
@@ -127,6 +129,8 @@ jobs:
   RunBantBuildCleaneer:
     # Running http://bant.build/ to check all dependencies in BUILD files.
     runs-on: ubuntu-24.04
+    if: false   # Currently disabled to test windows build
+
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
@@ -169,6 +173,7 @@ jobs:
   Check:
     container: ubuntu:jammy
     runs-on: [self-hosted, Linux, X64, gcp-custom-runners]
+    if: false   # Currently disabled to test windows build
     strategy:
       fail-fast: false
       matrix:
@@ -368,6 +373,8 @@ jobs:
 
   MacOsBuildDevTools:
     runs-on: macos-latest
+    if: false   # Currently disabled to test windows build
+
     steps:
 
     - name: Cancel previous
@@ -414,6 +421,8 @@ jobs:
     # New MacOS has a broken patch utility:
     # //verilog/tools/lint:lint-tool_test trips over a no-newline-at-end-of-file
     runs-on: macos-12
+    if: false   # Currently disabled to test windows build
+
     steps:
 
     - name: Cancel previous
@@ -464,6 +473,8 @@ jobs:
   PrepareVSPlugin:
     container: ubuntu:jammy
     runs-on: [self-hosted, Linux, X64, gcp-custom-runners]
+    if: false   # Currently disabled to test windows build
+
     steps:
 
     - uses: actions/checkout@v3
@@ -500,6 +511,7 @@ jobs:
       run: |
         choco install bazel --force --version=6.4.0
         choco install winflexbison3
+        choco install llvm --version=16.0.6
 
     - name: Debug bazel directory settings
       # We need to explicitly call the bazel binary from choco, otherwise
@@ -538,6 +550,7 @@ jobs:
   Release:
     needs: [ Check, MacOsBuild, WindowsBuild, PrepareVSPlugin ]
     runs-on: ubuntu-20.04
+    if: false   # Currently disabled to test windows build
     name: 📦 Release
     if: ${{github.event_name == 'push' && (github.ref == 'refs/heads/main' || github.ref == 'refs/heads/master')}}
 
@@ -592,6 +605,7 @@ jobs:
     name: Build and deploy GitHub pages
     needs: [Check]
     runs-on: ubuntu-22.04
+    if: false   # Currently disabled to test windows build
     steps:
       - uses: actions/checkout@v3