GHA: automatic vcpkg binary cache is broken, temporarily disable vcpkg jobs

In the last 1-2 days, curl's vcpkg binary cache entries stored by GHA
apparently disappeared, and each vcpkg job is now rebuilding everything
on every run. This takes up to 40 minutes per job. New cache entries
fail on upload with messages like:
```
Completed submission of nghttp2:[email protected] to 0 binary cache(s) in 172 ms
```
(note the zero.)

This coincided with my adding support for windows-11-arm and touching
some jobs affected. Yet, unrelated. It also affects Android jobs. The root
cause is a runner image update bumping the vcpkg tool.

The latest vcpkg tool also has this issue.

As a temporary workaround, stop using vcpkg in CI.

Last good run: https://github.com/curl/curl/actions/runs/14473789417/job/40594304523
First bad run: https://github.com/curl/curl/actions/runs/14474616982/job/40597095025

Assisted-by: Tal Regev
Ref: curl#17070

Closes curl#17069

Author: vszakats

.github/workflows/non-native.yml

@@ -410,17 +410,11 @@ jobs:
           - { build: 'cmake'    , platform: '21', name: "!ssl !zstd",
               options: '-DCURL_ENABLE_SSL=OFF -DCURL_USE_LIBPSL=OFF -DCURL_ZSTD=OFF' }
 
-          - { build: 'autotools', platform: '35', name: "openssl", install: 'brotli zstd libpsl nghttp2 openssl libssh2',
-              options: '--with-openssl --with-brotli' }
-
-          - { build: 'cmake'    , platform: '35', name: "openssl", install: 'brotli zstd libpsl nghttp2 openssl libssh2',
-              options: '-DCURL_USE_OPENSSL=ON' }
+          - { build: 'autotools', platform: '35', name: "!ssl !zstd",
+              options: '--without-ssl --without-libpsl --without-zstd' }
 
-          # FIXME: Must disable zstd explicitly, otherwise cmake/pkg-config finds it in /usr/include
-          #        and the build fails. I had found no option to disable this behavior. Other default
-          #        dependencies not offered via vcpkg may also need this.
-          - { build: 'cmake'    , platform: '35', name: "boringssl !zstd", install: 'libpsl boringssl',
-              options: '-DCURL_USE_OPENSSL=ON -DOPENSSL_USE_STATIC_LIBS=ON -DCURL_ZSTD=OFF' }
+          - { build: 'cmake'    , platform: '35', name: "!ssl !zstd",
+              options: '-DCURL_ENABLE_SSL=OFF -DCURL_USE_LIBPSL=OFF -DCURL_ZSTD=OFF' }
 
       fail-fast: false
     steps: