Log Message:
gimp: Update to 2.10.14

Highlights:

    Basic out-of-canvas pixels viewing and editing
    Optional editing of layers with disabled visibility
    Foreground Select tool: new Grayscale Preview Mode
    Newly added Normal Map filter
    27 old filters ported to use GEGL buffers
    HEIF, TIFF, and PDF support improvements
    Better loading of corrupted XCF files
    Grayscale workflows order of magnitude faster
    macOS Catalina compatibility
    45 bugfixes, 22 translation updates