chore: Bump dfx

Author: Frederik Rothenberger

.github/workflows/provision-darwin.sh

@@ -18,7 +18,7 @@ rm node.pkg
 
 # Install DFINITY SDK.
 curl --location --output install-dfx.sh "https://internetcomputer.org/install.sh"
-DFX_VERSION=${DFX_VERSION:=0.12.0} bash install-dfx.sh < <(yes Y)
+DFX_VERSION=${DFX_VERSION:=0.15.3} bash install-dfx.sh < <(yes Y)
 rm install-dfx.sh
 dfx cache install
 

.github/workflows/provision-linux.sh

@@ -13,7 +13,7 @@ rm install-node.sh
 
 # Install DFINITY SDK.
 wget --output-document install-dfx.sh "https://internetcomputer.org/install.sh"
-DFX_VERSION=${DFX_VERSION:=0.12.0} bash install-dfx.sh < <(yes Y)
+DFX_VERSION=${DFX_VERSION:=0.15.3} bash install-dfx.sh < <(yes Y)
 rm install-dfx.sh
 dfx cache install