Bring back hyphen in YAML folded syntax

This ensures that no line break is appended at the end of the
multiline string.

Author: molinav

.github/workflows/build.yml

@@ -51,13 +51,13 @@ jobs:
         os: [ubuntu-latest, windows-latest]
         include:
           - os: ubuntu-latest
-            before_all: >
+            before_all: >-
               echo "Starting BEFORE_ALL script" &&
               echo "GEOS_DIR set to: ${GEOS_DIR}" &&
               cd "{package}" &&
               python -c "import utils; utils.GeosLibrary('${GEOS_VERSION}').build('${GEOS_DIR}', njobs=2)"
           - os: windows-latest
-            before_all: >
+            before_all: >-
               echo Starting BEFORE_ALL script &&
               echo GEOS_DIR set to: %GEOS_DIR% &&
               cd "{package}" &&
@@ -86,7 +86,7 @@ jobs:
           CIBW_BUILD: "cp39* cp310* cp311* cp312*"
           CIBW_SKIP: "pp* *-musllinux_* *-win32 *-manylinux_i686 *-musllinux_i686 *-aarch64 *-armv7l"
           CIBW_BEFORE_ALL: ${{ matrix.before_all }}
-          CIBW_ENVIRONMENT: >
+          CIBW_ENVIRONMENT: >-
             GEOS_VERSION="3.6.5"
             GEOS_DIR="$(pwd)/extern"
             PIP_PREFER_BINARY=1