chore: switch default parameter expansion operator

Signed-off-by: rhdh-bot service account <rhdh-bot@redhat.com>

rh-pre-commit.version: 2.3.2
rh-pre-commit.check-secrets: ENABLED

Author: rhdh-bot

export-dynamic/export-dynamic.sh

@@ -12,7 +12,7 @@ skipWorkspace=false
 INPUTS_CLI_PACKAGE=${INPUTS_CLI_PACKAGE:-"@red-hat-developer-hub/cli"} 
 # set command names based on CLI package
 EXPORT_COMMAND=("plugin" "export")
-INPUTS_CONTAINER_BUILD_TOOL=${INPUTS_CONTAINER_BUILD_TOOL:="podman"}
+INPUTS_CONTAINER_BUILD_TOOL=${INPUTS_CONTAINER_BUILD_TOOL:-"podman"}
 PACKAGE_COMMAND=("plugin" "package" "--container-tool" "${INPUTS_CONTAINER_BUILD_TOOL}")