GHA/windows: vcpkg GnuTLS started breaking CI, temp drop it

Starting today vcpkg wants to rebuild GnuTLS but fails:
```
error: building shiftmedia-libgnutls:x64-windows failed with: BUILD_FAILED
```
Ref: https://github.com/curl/curl/actions/runs/10594890318/job/29359499149#step:5:144

Temporary solution:
- drop it from the MultiSSL job.
- replace with mbedTLS job. This job still tests libssh and I could
  not find a better place for it right away.

GnuTLS to be restored once it builds again. Possibly when this hash
reaches the GHA `windows-latest` runner:
https://github.com/microsoft/vcpkg/commit/f5ec6f30ff70f04f841436a0f36600bdbabfcfbf

Also:
- switch to Debug for the mbedTLS job. Should also work now with
  GnuTLS, once it's back:
  Ref: https://github.com/microsoft/vcpkg/pull/40473

Closes #14710

diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index 5bbb99dba645624cb5eee8f6d83b304c13f277c0..b6d79d5eb3aca64b53bad1bb5c7290897c19e2e3 100644 (file)
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -420,12 +420,12 @@ jobs:
       matrix:
         include:
           - name: 'schannel MultiSSL U'
-            install: 'brotli zlib zstd libpsl nghttp2 libssh2[core,zlib] pkgconf gsasl openssl mbedtls shiftmedia-libgnutls'
+            install: 'brotli zlib zstd libpsl nghttp2 libssh2[core,zlib] pkgconf gsasl openssl mbedtls'
             arch: 'x64'
             plat: 'windows'
             type: 'Debug'
             tflags: '~1516 ~2301 ~2302 ~2303 ~2307'
-            config: '-DENABLE_DEBUG=ON -DENABLE_UNICODE=ON  -DCURL_USE_SCHANNEL=ON  -DCURL_BROTLI=ON -DCURL_ZSTD=ON -DBUILD_SHARED_LIBS=OFF -DCURL_USE_LIBSSH2=ON -DCURL_USE_OPENSSL=ON -DCURL_USE_MBEDTLS=ON -DCURL_USE_GNUTLS=ON -DCURL_DEFAULT_SSL_BACKEND=schannel -DCURL_USE_GSASL=ON -DUSE_WIN32_IDN=ON'
+            config: '-DENABLE_DEBUG=ON -DENABLE_UNICODE=ON  -DCURL_USE_SCHANNEL=ON  -DCURL_BROTLI=ON -DCURL_ZSTD=ON -DBUILD_SHARED_LIBS=OFF -DCURL_USE_LIBSSH2=ON -DCURL_USE_OPENSSL=ON -DCURL_USE_MBEDTLS=ON -DCURL_DEFAULT_SSL_BACKEND=schannel -DCURL_USE_GSASL=ON -DUSE_WIN32_IDN=ON'
           - name: 'openssl'
             install: 'brotli zlib zstd libpsl nghttp2 nghttp3 openssl libssh2 pkgconf gsasl c-ares'
             arch: 'x64'
@@ -461,17 +461,17 @@ jobs:
             type: 'Debug'
             tflags: '~1516'
             config: '-DENABLE_DEBUG=ON -DENABLE_UNICODE=OFF -DCURL_USE_SCHANNEL=OFF -DCURL_BROTLI=ON -DCURL_ZSTD=ON -DBUILD_SHARED_LIBS=OFF -DCURL_USE_LIBSSH2=ON -DCURL_USE_WOLFSSL=ON -DUSE_NGTCP2=ON -DCURL_USE_GSASL=ON'
-          - name: 'gnutls'
-            install: 'brotli zlib zstd libpsl nghttp2 shiftmedia-libgnutls libssh pkgconf gsasl ngtcp2[gnutls] nghttp3'
+          - name: 'mbedtls'
+            install: 'brotli zlib zstd libpsl nghttp2 mbedtls libssh pkgconf gsasl'
             arch: 'x64'
             plat: 'windows'
-            type: 'Release'
+            type: 'Debug'
             tflags: '~1516'
             # WARNING: libssh uses hard-coded world-writable paths (/etc/..., ~/.ssh/) to
             #          read its configuration from, making it vulnerable to attacks on
             #          Windows. Do not use this component till there is a fix for these.
             # https://github.com/curl/curl-for-win/blob/3951808deb04df9489ee17430f236ed54436f81a/libssh.sh#L6-L8
-            config: '-DENABLE_DEBUG=ON -DENABLE_UNICODE=OFF -DCURL_USE_SCHANNEL=OFF -DCURL_BROTLI=ON -DCURL_ZSTD=ON -DBUILD_SHARED_LIBS=OFF -DCURL_USE_LIBSSH2=OFF -DCURL_USE_LIBSSH=ON -DCURL_USE_GNUTLS=ON -DCURL_USE_GSASL=ON -DUSE_NGTCP2=ON'
+            config: '-DENABLE_DEBUG=ON -DENABLE_UNICODE=OFF -DCURL_USE_SCHANNEL=OFF -DCURL_BROTLI=ON -DCURL_ZSTD=ON -DBUILD_SHARED_LIBS=OFF -DCURL_USE_LIBSSH2=OFF -DCURL_USE_LIBSSH=ON -DCURL_USE_MBEDTLS=ON -DCURL_USE_GSASL=ON'
       fail-fast: false
     steps:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4