Update to new OpenSSL 3 builder

Author: SeanTAllen

.github/workflows/breakage-against-linux-ponyc-latest.yml

@@ -78,7 +78,7 @@ jobs:
     name: OpenSSL 3.x with most recent ponyc latest
     runs-on: ubuntu-latest
     container:
-      image: ghcr.io/ponylang/shared-docker-ci-x86-64-unknown-linux-builder-with-openssl_3.4.1:latest
+      image: ghcr.io/ponylang//shared-docker-ci-standard-builder-with-openssl_3.6.0:nightly
     steps:
       - uses: actions/checkout@v4.1.1
       - name: Test

.github/workflows/pr.yml

@@ -69,7 +69,7 @@ jobs:
     name: OpenSSL 3.x with most recent ponyc release
     runs-on: ubuntu-latest
     container:
-      image: ghcr.io/ponylang/shared-docker-ci-x86-64-unknown-linux-builder-with-openssl_3.4.1:release
+      image: ghcr.io/ponylang//shared-docker-ci-standard-builder-with-openssl_3.6.0:release
     steps:
       - uses: actions/checkout@v4.1.1
       - name: Test