Attempt using rootless Docker in CI via the setup-docker-action

Restores using ubuntu-latest.

Basically, at some point in the last year the existing Docker e2e tests started
failing. I'm unclear if this is an issue with the OS, the docker packages, or
what. This just tries to find a solution.

.github/actions/build-dependencies/action.yml

@@ -13,9 +13,6 @@ runs:
         sudo apt remove -y --allow-remove-essential -f shim-signed
         # This command would fail, due to shim-signed having unmet dependencies, hence its removal
         sudo apt remove -y "*qemu*" "*sql*" "*texinfo*" "*imagemagick*"
-        sudo apt autoremove -y
-        sudo apt clean
-        docker system prune -a --volumes
       if: runner.os == 'Linux'
 
     - name: Remove unused packages
@@ -47,5 +44,27 @@ runs:
         svm install 0.8.25
         svm use 0.8.25
 
+    - name: Remove preinstalled Docker
+      shell: bash
+      run: |
+        docker system prune -a --volumes
+        sudo apt remove -y *docker*
+      if: runner.os == "Linux"
+
+    - name: Update system dependencies
+      shell: bash
+      run: |
+        sudo apt update -y
+        sudo apt upgrade -y
+        sudo apt autoremove -y
+        sudo apt clean
+      if: runner.os == "Linux"
+
+    - name: Install rootless Docker
+      uses: docker/setup-docker-action@b60f85385d03ac8acfca6d9996982511d8620a19
+      with:
+        rootless: true
+      if: runner.os == "Linux"
+
     # - name: Cache Rust
     #   uses: Swatinem/rust-cache@a95ba195448af2da9b00fb742d14ffaaf3c21f43

.github/workflows/coordinator-tests.yml

@@ -29,7 +29,7 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac
 

.github/workflows/full-stack-tests.yml

@@ -11,7 +11,7 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac
 

.github/workflows/message-queue-tests.yml

@@ -25,7 +25,7 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac
 

.github/workflows/monero-tests.yaml

@@ -18,7 +18,7 @@ on:
 jobs:
   # Only run these once since they will be consistent regardless of any node
   unit-tests:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac
 
@@ -43,7 +43,7 @@ jobs:
       # Doesn't run unit tests with features as the tests workflow will
 
   integration-tests:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-latest
     # Test against all supported protocol versions
     strategy:
       matrix:

.github/workflows/networks-tests.yml

@@ -19,7 +19,7 @@ on:
 
 jobs:
   test-networks:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac
 

.github/workflows/processor-tests.yml

@@ -29,7 +29,7 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac
 

.github/workflows/reproducible-runtime.yml

@@ -25,7 +25,7 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac
 

.github/workflows/tests.yml

@@ -27,7 +27,7 @@ on:
 
 jobs:
   test-infra:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac
 
@@ -47,7 +47,7 @@ jobs:
             -p serai-docker-tests
 
   test-substrate:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac
 
@@ -77,7 +77,7 @@ jobs:
             -p serai-node
 
   test-serai-client:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac