CI: upgrade to Elixir 1.11

.gitlab-ci.yml

@@ -1,4 +1,4 @@
-image: elixir:1.9.4
+image: elixir:1.11
 
 variables: &global_variables
   POSTGRES_DB: pleroma_test
@@ -157,8 +157,7 @@ analysis:
 
 cycles:
   stage: test
-  image: elixir:1.11
-  cache: {}
+  cache: *testing_cache_policy
   script:
     - mix deps.get
     - mix compile
@@ -238,7 +237,7 @@ stop_review_app:
 
 amd64:
   stage: release
-  image: elixir:1.10.3
+  image: elixir:1.11
   only: &release-only
   - stable@pleroma/pleroma
   - develop@pleroma/pleroma
@@ -276,7 +275,7 @@ amd64-musl:
   stage: release
   artifacts: *release-artifacts
   only: *release-only
-  image: elixir:1.10.3-alpine
+  image: elixir:1.11-alpine
   cache: *release-cache
   variables: *release-variables
   before_script: &before-release-musl
@@ -292,7 +291,7 @@ arm:
   only: *release-only
   tags:
     - arm32-specified
-  image: arm32v7/elixir:1.10.3
+  image: arm32v7/elixir:1.11
   cache: *release-cache
   variables: *release-variables
   before_script: *before-release
@@ -304,7 +303,7 @@ arm-musl:
   only: *release-only
   tags:
     - arm32-specified
-  image: arm32v7/elixir:1.10.3-alpine
+  image: arm32v7/elixir:1.11-alpine
   cache: *release-cache
   variables: *release-variables
   before_script: *before-release-musl
@@ -316,7 +315,7 @@ arm64:
   only: *release-only
   tags:
     - arm
-  image: arm64v8/elixir:1.10.3
+  image: arm64v8/elixir:1.11
   cache: *release-cache
   variables: *release-variables
   before_script: *before-release
@@ -328,7 +327,7 @@ arm64-musl:
   only: *release-only
   tags:
     - arm
-  image: arm64v8/elixir:1.10.3-alpine
+  image: arm64v8/elixir:1.11-alpine
   cache: *release-cache
   variables: *release-variables
   before_script: *before-release-musl