Bump rake_docker from 2.19.0 to 2.21.0

Bumps [rake_docker](https://github.com/infrablocks/rake_docker) from 2.19.0 to 2.21.0.
- [Changelog](https://github.com/infrablocks/rake_docker/blob/main/CHANGELOG.md)
- [Commits](infrablocks/rake_docker@v2.19.0...v2.21.0)

---
updated-dependencies:
- dependency-name: rake_docker
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile.lock

@@ -15,7 +15,7 @@ GEM
       public_suffix (>= 2.0.2, < 7.0)
     ast (2.4.2)
     aws-eventstream (1.3.0)
-    aws-partitions (1.859.0)
+    aws-partitions (1.960.0)
     aws-sdk (3.2.0)
       aws-sdk-resources (~> 3)
     aws-sdk-accessanalyzer (1.43.0)
@@ -293,10 +293,10 @@ GEM
     aws-sdk-controltower (1.14.0)
       aws-sdk-core (~> 3, >= 3.188.0)
       aws-sigv4 (~> 1.1)
-    aws-sdk-core (3.188.0)
-      aws-eventstream (~> 1, >= 1.0.2)
+    aws-sdk-core (3.201.3)
+      aws-eventstream (~> 1, >= 1.3.0)
       aws-partitions (~> 1, >= 1.651.0)
-      aws-sigv4 (~> 1.5)
+      aws-sigv4 (~> 1.8)
       jmespath (~> 1, >= 1.6.1)
     aws-sdk-costandusagereportservice (1.52.0)
       aws-sdk-core (~> 3, >= 3.188.0)
@@ -370,9 +370,9 @@ GEM
     aws-sdk-ec2instanceconnect (1.35.0)
       aws-sdk-core (~> 3, >= 3.188.0)
       aws-sigv4 (~> 1.1)
-    aws-sdk-ecr (1.67.0)
-      aws-sdk-core (~> 3, >= 3.188.0)
-      aws-sigv4 (~> 1.1)
+    aws-sdk-ecr (1.79.0)
+      aws-sdk-core (~> 3, >= 3.201.0)
+      aws-sigv4 (~> 1.5)
     aws-sdk-ecrpublic (1.24.0)
       aws-sdk-core (~> 3, >= 3.188.0)
       aws-sigv4 (~> 1.1)
@@ -1489,7 +1489,7 @@ GEM
       aws-sdk-core (~> 3, >= 3.188.0)
       aws-sigv4 (~> 1.1)
     aws-sigv2 (1.2.0)
-    aws-sigv4 (1.7.0)
+    aws-sigv4 (1.9.1)
       aws-eventstream (~> 1, >= 1.0.2)
     base64 (0.2.0)
     bigdecimal (3.1.8)
@@ -1505,7 +1505,7 @@ GEM
     down (5.4.1)
       addressable (~> 2.8)
     drb (2.2.1)
-    excon (0.104.0)
+    excon (0.111.0)
     faraday (2.10.0)
       faraday-net_http (>= 2.0, < 3.2)
       logger
@@ -1567,11 +1567,11 @@ GEM
       minitar (~> 0.9)
       rake_factory (~> 0.23)
       rubyzip (>= 1.3)
-    rake_docker (2.19.0)
+    rake_docker (2.21.0)
       aws-sdk-ecr (~> 1.2)
       colored2 (~> 3.1)
       docker-api (>= 1.34, < 3.0)
-      rake_factory (~> 0.23)
+      rake_factory (~> 0.33)
     rake_factory (0.34.0.pre.2)
       activesupport (>= 4)
       rake (~> 13.0)