GHA: enable OpenSSL QUIC in a macOS and MinGW job

Closes #16665
diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index 38d3508..f9ce13c 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -84,8 +84,8 @@
             configure: --enable-debug --with-libssh --with-openssl=$(brew --prefix openssl) --enable-ares
           - name: 'OpenSSL libssh'
             compiler: llvm@15
-            install: libssh
-            configure: --enable-debug --with-libssh --with-openssl=$(brew --prefix openssl)
+            install: libssh libnghttp3
+            configure: --enable-debug --with-libssh --with-openssl=$(brew --prefix openssl) --with-openssl-quic
           - name: '!ssl c-ares'
             compiler: clang
             configure: --enable-debug --enable-ares --without-ssl
@@ -381,7 +381,7 @@
         # https://en.wikipedia.org/wiki/MacOS_version_history
         image: [macos-13, macos-14, macos-15]
         # Can skip these to reduce jobs:
-        #   15.1 has the same default macOS SDK as 15.2 and identical test result.
+        #   15.1 has the same default macOS SDK as 15.2 and identical test results.
         #   14.1, 15.4 not revealing new fallouts.
         #xcode: ['14.1', '14.2', '14.3.1', '15.0.1', '15.1', '15.2', '15.3', '15.4', '16.0', '16.1']  # all Xcode
         #xcode: ['14.1', '14.2', '14.3.1', '15.0.1'        , '15.2', '15.3', '15.4', '16.0', '16.1']  # all SDK
@@ -390,7 +390,7 @@
         macos-version-min: ['']
         build: [autotools, cmake]
         exclude:
-          # Combinations uncovered by runner images:
+          # Combinations not covered by runner images:
           - { image: macos-13, xcode: '15.3'   }
           - { image: macos-13, xcode: '15.4'   }
           - { image: macos-13, xcode: '16.0'   }
diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index 8b19a9b..fb3cec6 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -179,7 +179,7 @@
           - { build: 'autotools', sys: 'msys'   , env: 'x86_64'      , tflags: ''       , config: '--with-openssl', install: 'openssl-devel', name: 'default R' }
           # MinGW
           - { build: 'autotools', sys: 'mingw64', env: 'x86_64'      , tflags: 'skiprun', config: '--enable-debug --with-openssl --disable-threaded-resolver --disable-curldebug --enable-static=no --without-zlib', install: 'mingw-w64-x86_64-openssl', name: 'default' }
-          - { build: 'autotools', sys: 'mingw64', env: 'x86_64'      , tflags: ''       , config: '--enable-debug --with-openssl --enable-windows-unicode --enable-ares', install: 'mingw-w64-x86_64-openssl', name: 'c-ares U' }
+          - { build: 'autotools', sys: 'mingw64', env: 'x86_64'      , tflags: ''       , config: '--enable-debug --with-openssl --enable-windows-unicode --enable-ares --with-openssl-quic', install: 'mingw-w64-x86_64-openssl mingw-w64-x86_64-nghttp3', name: 'c-ares U' }
           - { build: 'cmake'    , sys: 'mingw64', env: 'x86_64'      , tflags: ''       , config: '-DENABLE_DEBUG=ON  -DBUILD_SHARED_LIBS=OFF -DCURL_USE_SCHANNEL=ON -DENABLE_UNICODE=ON -DENABLE_ARES=ON', install: '', type: 'Debug', name: 'schannel c-ares U' }
           - { build: 'cmake'    , sys: 'clang64', env: 'clang-x86_64', tflags: ''       , config: '-DENABLE_DEBUG=ON  -DBUILD_SHARED_LIBS=OFF -DCURL_USE_GNUTLS=ON   -DENABLE_UNICODE=OFF -DUSE_NGTCP2=ON', install: 'mingw-w64-clang-x86_64-gnutls mingw-w64-clang-x86_64-nghttp3 mingw-w64-clang-x86_64-ngtcp2', type: 'Debug', name: 'gnutls' }
           - { build: 'cmake'    , sys: 'ucrt64' , env: 'ucrt-x86_64' , tflags: 'skiprun', config: '-DENABLE_DEBUG=OFF -DBUILD_SHARED_LIBS=ON  -DCURL_USE_SCHANNEL=ON -DENABLE_UNICODE=ON -DENABLE_CURLDEBUG=ON', install: '', type: 'Release', name: 'schannel R TrackMemory' }