Add 1.21.6 and a Bullseye build

^{Created from JetBrains using CodeStream}

.gitlab-ci.yml

@@ -101,8 +101,8 @@ build-deb:bullseye:
   stage: build
   image: containers.ethitter.com:443/docker/images/debian:bullseye
   variables:
-    NGINX_BINARY: $NGINX_BINARY_bullseye
-    NGINX_VERSION: $NGINX_VERSION_bullseye
+    NGINX_BINARY: $NGINX_BINARY_BULLSEYE
+    NGINX_VERSION: $NGINX_VERSION_BULLSEYE
     BUILD_DIR: 'build-bullseye'
   script:
     - cd source
@@ -117,7 +117,7 @@ test-deb:bullseye:
   before_script:
     - export BUILD_DIR="${CI_PROJECT_DIR}/build-bullseye"
   script:
-    - dpkg -i ${BUILD_DIR}/nginx_${NGINX_VERSION_bullseye}*.deb
+    - dpkg -i ${BUILD_DIR}/nginx_${NGINX_VERSION_BULLSEYE}*.deb
     - nginx -V
   after_script:
     - ''