GHA: drop quictls 3.3.0 builds in favor of openssl 3.5+

- http3-linux: move local nghttpx (nghttp2) build to openssl (from
  quictls). Also tried LibreSSL, but it made some HTTP/2 tests fails.

- http3-linux: drop quictls ngtcp2 build.

- http3-linux: build local openssl with `no-deprecated`.
  (previously tested in the quictls local build.)

- http3-linux: explicitly disable LDAP in cmake openssl jobs.
  cmake builds auto-detect OpenLDAP (autotools don't), and when enabled,
  linking curl fails because system `libsasl.so` requires MD5 openssl
  functions, which are missing from openssl no-deprecated builds.

- macos: move options tested in quictls jobs to other ones.

- linux: drop unused quictls local build. (it was used for msh3.)
  Follow-up to 91138b014d #17729

- renovate: drop quictls bump detection.

Closes #18833

.github/workflows/linux.yml

@@ -49,8 +49,6 @@ env:
   BORINGSSL_VERSION: 0.20251002.0
   # handled in renovate.json
   OPENSSL_VERSION: 3.6.0
-  # handled in renovate.json
-  QUICTLS_VERSION: 3.3.0
   # renovate: datasource=github-tags depName=rustls/rustls-ffi versioning=semver registryUrl=https://github.com
   RUSTLS_VERSION: 0.15.0
   # handled in renovate.json
@@ -495,25 +493,6 @@ jobs:
           make
           make -j1 install_sw
 
-      - name: 'cache quictls'
-        if: ${{ contains(matrix.build.install_steps, 'quictls') }}
-        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
-        id: cache-quictls
-        env:
-          cache-name: cache-quictls
-        with:
-          path: ~/quictls
-          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ env.QUICTLS_VERSION }}-quic1
-
-      - name: 'build quictls'
-        if: ${{ contains(matrix.build.install_steps, 'quictls') && steps.cache-quictls.outputs.cache-hit != 'true' }}
-        run: |
-          git clone --quiet --depth=1 -b "openssl-${QUICTLS_VERSION}-quic1" https://github.com/quictls/openssl
-          cd openssl
-          ./config --prefix=/home/runner/quictls --libdir=lib no-makedepend no-apps no-docs no-tests
-          make
-          make -j1 install_sw
-
       - name: 'cache awslc'
         if: ${{ contains(matrix.build.install_steps, 'awslc') }}
         uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0