sanitizer ci: skip negotiate tests

We don't build with SPNEGO enabled on our focal-based sanitizer builds,
so we need to disable the negotiate tests.

.github/workflows/main.yml

@@ -95,6 +95,7 @@ jobs:
             CMAKE_OPTIONS: -DCMAKE_PREFIX_PATH=/usr/local/msan -DUSE_HTTPS=mbedTLS -DUSE_SHA1=HTTPS -DREGEX_BACKEND=pcre -DDEPRECATE_HARD=ON -DUSE_BUNDLED_ZLIB=ON
             CMAKE_GENERATOR: Ninja
             SKIP_SSH_TESTS: true
+            SKIP_NEGOTIATE_TESTS: true
             ASAN_SYMBOLIZER_PATH: /usr/bin/llvm-symbolizer-10
           os: ubuntu-latest
         - # Focal, Clang 10, OpenSSL, UndefinedBehaviorSanitizer
@@ -105,6 +106,7 @@ jobs:
             CMAKE_OPTIONS: -DCMAKE_PREFIX_PATH=/usr/local -DUSE_HTTPS=OpenSSL -DUSE_SHA1=HTTPS -DREGEX_BACKEND=pcre -DDEPRECATE_HARD=ON -DUSE_BUNDLED_ZLIB=ON
             CMAKE_GENERATOR: Ninja
             SKIP_SSH_TESTS: true
+            SKIP_NEGOTIATE_TESTS: true
             ASAN_SYMBOLIZER_PATH: /usr/bin/llvm-symbolizer-10
           os: ubuntu-latest
         - # macOS