chore(deps): update earthly/earthly docker tag to v0.8.15

Author: renovate[bot]

.github/workflows/continuous-delivery.yml

@@ -20,7 +20,7 @@ jobs:
       - name: Download Earthly v0.8.12.
         uses: earthly/actions-setup@v1
         with:
-          version: v0.8.12
+          version: v0.8.15
       - name: Checkout code.
         uses: actions/checkout@v4
       - name: Release artifacts.

.github/workflows/continuous-integration.yml

@@ -17,7 +17,7 @@ jobs:
       - name: Download Earthly v0.8.12.
         uses: earthly/actions-setup@v1
         with:
-          version: v0.8.12
+          version: v0.8.15
       - name: Checkout code.
         uses: actions/checkout@v4
       - name: Check formatting.
@@ -32,7 +32,7 @@ jobs:
       - name: Download Earthly v0.8.12.
         uses: earthly/actions-setup@v1
         with:
-          version: v0.8.12
+          version: v0.8.15
       - name: Checkout code.
         uses: actions/checkout@v4
       - name: Check linting.
@@ -44,7 +44,7 @@ jobs:
       - name: Download Earthly v0.8.12.
         uses: earthly/actions-setup@v1
         with:
-          version: v0.8.12
+          version: v0.8.15
       - name: Checkout code.
         uses: actions/checkout@v4
       - name: Compile.
@@ -56,7 +56,7 @@ jobs:
       - name: Download Earthly v0.8.12.
         uses: earthly/actions-setup@v1
         with:
-          version: v0.8.12
+          version: v0.8.15
       - name: Checkout code.
         uses: actions/checkout@v4
         with:
@@ -71,7 +71,7 @@ jobs:
       - name: Download Earthly v0.8.12.
         uses: earthly/actions-setup@v1
         with:
-          version: v0.8.12
+          version: v0.8.15
       - name: Checkout code.
         uses: actions/checkout@v4
       - name: End to End test.

.github/workflows/conventional-commits.yml

@@ -14,7 +14,7 @@ jobs:
       - name: Download Earthly v0.8.12.
         uses: earthly/actions-setup@v1
         with:
-          version: v0.8.12
+          version: v0.8.15
       - name: Checkout code.
         uses: actions/checkout@v4
         with:

.github/workflows/git-history.yml

@@ -14,7 +14,7 @@ jobs:
       - name: Download Earthly v0.8.12.
         uses: earthly/actions-setup@v1
         with:
-          version: v0.8.12
+          version: v0.8.15
       - name: Checkout code.
         uses: actions/checkout@v4
         with:

.github/workflows/github-actions-workflows.yml

@@ -14,7 +14,7 @@ jobs:
       - name: Download Earthly v0.8.12.
         uses: earthly/actions-setup@v1
         with:
-          version: v0.8.12
+          version: v0.8.15
       - name: Checkout code.
         uses: actions/checkout@v4
       - name: Check GitHub Actions workflows linting.
@@ -26,7 +26,7 @@ jobs:
       - name: Download Earthly v0.8.12.
         uses: earthly/actions-setup@v1
         with:
-          version: v0.8.12
+          version: v0.8.15
       - name: Checkout code.
         uses: actions/checkout@v4
       - name: Check formatting.