chore(deps): pin dependencies

Author: renovate[bot]

.gitlab-ci.yml

@@ -15,14 +15,14 @@
   # `image`
   # yamllint disable rule:line-length
   image_commitlint: &image_commitlint 'techneg/ci-commitlint:v1.1.86@sha256:8c5ba8332790247b0bdd0e0f7a87fee169aa5405197a9cca4e79be30e45b0269'
-  image_dindruby: &image_dindruby 'techneg/ci-docker-python-ruby:v2.2.45'
-  image_dindrubybionic: &image_dindrubybionic 'techneg/ci-docker-python-ruby:v2.2.45'
-  image_precommit: &image_precommit 'techneg/ci-pre-commit:v2.4.10'
-  image_rubocop: &image_rubocop 'pipelinecomponents/rubocop:latest'
-  image_semantic-release: &image_semanticrelease 'myii/ssf-semantic-release:15.14'
+  image_dindruby: &image_dindruby 'techneg/ci-docker-python-ruby:v2.2.45@sha256:093b210bd2e728f45e0195c71b9e9ec7bdbb11f0f3d47a594ae7b4200d2c68b2'
+  image_dindrubybionic: &image_dindrubybionic 'techneg/ci-docker-python-ruby:v2.2.45@sha256:093b210bd2e728f45e0195c71b9e9ec7bdbb11f0f3d47a594ae7b4200d2c68b2'
+  image_precommit: &image_precommit 'techneg/ci-pre-commit:v2.4.10@sha256:d05f96fc158b4a2d1d8401ee87fb2435d60adea1406e12c77223d30b5eceb121'
+  image_rubocop: &image_rubocop 'pipelinecomponents/rubocop:latest@sha256:fe69f9642c7edde46bbd78326d2c42c6e13fc73694efb142e92e206725479328'
+  image_semantic-release: &image_semanticrelease 'myii/ssf-semantic-release:15.14@sha256:374f588420087517a3cc0235e11293bffd72d7a59da3d98d5e69f014ff2a7761'
   # `services`
   services_docker_dind: &services_docker_dind
-    - 'docker:dind'
+    - 'docker:dind@sha256:3a861ec98623bd6014610291123751dc19e0c6d474ac3b38767771791ac0eb5e'
   # yamllint enable rule:line-length
   # `variables`
   # https://forum.gitlab.com/t/gitlab-com-ci-caching-rubygems/5627/3