[3.13] gh-135261: bring back CI job for testing OpenSSL 1.1.1w (GH-135262) (#138110)

This partially reverts commit ad944b5e1f
by bringing back the CI job for testing OpenSSL 1.1.1w. Despite this
version being upstream EOL, the rationale for keeping it as follows:

- It most resembles other 1.1.1-work-a-like ssl APIs supported by important vendors.
- Python officially requires OpenSSL 1.1.1 or later, although OpenSSL 3.0 or later
  is recommended for cryptographic modules. Since changing the build requirements
  requires a transition period, we need to keep testing the allowed versions.
- The code base still contains calls to OpenSSL functions that are deprecated since
  OpenSSL 3.0 as well as `ifdef` blocks constrained to OpenSSL 1.1.1.

(cherry picked from commit 96b7a2eba4)

.github/workflows/build.yml

@@ -307,7 +307,10 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-24.04]
-        openssl_ver: [3.0.15, 3.1.7, 3.2.3, 3.3.2]
+        # Keep 1.1.1w in our list despite it being upstream EOL and otherwise
+        # unsupported as it most resembles other 1.1.1-work-a-like ssl APIs
+        # supported by important vendors such as AWS-LC.
+        openssl_ver: [1.1.1w, 3.0.15, 3.1.7, 3.2.3, 3.3.2]
     env:
       OPENSSL_VER: ${{ matrix.openssl_ver }}
       MULTISSL_DIR: ${{ github.workspace }}/multissl