Update syn and dev dependencies

[Ogeon]

Update syn and a few dev dependencies. clap and image require newer Rust versions than 1.60 so they will have to wait for a later time.

[github-actions]

Benchmark for fbcebf4

Click to view benchmark

Test	Base	PR	%
Cie family/lab to lch	3.2±0.06µs	3.2±0.07µs	0.00%
Cie family/lab to xyz	761.7±8.84ns	761.7±13.65ns	0.00%
Cie family/lch to lab	3.1±0.06µs	2.4±0.03µs	-22.58%
Cie family/linsrgb to xyz	4.2±0.04µs	4.2±0.07µs	0.00%
Cie family/linsrgb to xyz - wide::f32x8	764.6±12.06ns	750.7±11.48ns	-1.82%
Cie family/xyz to lab	18.0±0.44µs	18.0±0.26µs	0.00%
Cie family/xyz to yxy	634.2±47.02ns	634.6±7.71ns	+0.06%
Cie family/yxy to xyz	546.9±8.07ns	698.3±11.12ns	+27.68%
Matrix functions/matrix_inverse	10.7±0.20ns	10.7±0.18ns	0.00%
Matrix functions/multiply_3x3	9.6±0.12ns	9.7±0.20ns	+1.04%
Matrix functions/multiply_rgb_to_xyz	6.0±0.12ns	6.0±0.08ns	0.00%
Matrix functions/multiply_xyz	6.0±0.09ns	6.0±0.08ns	0.00%
Matrix functions/multiply_xyz_to_rgb	6.0±0.08ns	6.0±0.10ns	0.00%
Matrix functions/rgb_to_xyz_matrix	24.9±0.39ns	24.9±0.57ns	0.00%
Rgb family/hsl to hsv	649.7±7.53ns	653.2±12.23ns	+0.54%
Rgb family/hsl to linear hsl	13.8±0.45µs	13.2±0.21µs	-4.35%
Rgb family/hsl to rgb	2.1±0.03µs	2.1±0.02µs	0.00%
Rgb family/hsv to hsl	821.6±12.85ns	819.1±11.73ns	-0.30%
Rgb family/hsv to hwb	234.0±4.85ns	232.9±3.63ns	-0.47%
Rgb family/hsv to linear hsv	11.8±0.20µs	12.6±0.17µs	+6.78%
Rgb family/hsv to rgb	1922.4±41.48ns	1910.9±32.37ns	-0.60%
Rgb family/hwb to hsv	478.2±6.53ns	478.5±6.91ns	+0.06%
Rgb family/hwb to linear hwb	12.3±0.17µs	13.3±0.27µs	+8.13%
Rgb family/linear hsl to hsl	11.9±0.35µs	11.6±0.20µs	-2.52%
Rgb family/linear hsv to hsv	10.7±0.24µs	10.7±0.14µs	0.00%
Rgb family/linear hwb to hwb	11.5±0.19µs	11.6±0.16µs	+0.87%
Rgb family/linsrgb to rgb	5.9±0.10µs	6.4±0.17µs	+8.47%
Rgb family/linsrgb to rgb - wide::f32x8	5.2±0.14µs	5.3±0.08µs	+1.92%
Rgb family/linsrgb_f32 to rgb_u8	961.9±13.93ns	999.0±11.02ns	+3.86%
Rgb family/linsrgb_f64 to rgb_u8	1218.8±17.38ns	1218.1±14.61ns	-0.06%
Rgb family/rgb to hsl	851.9±10.66ns	849.2±19.63ns	-0.32%
Rgb family/rgb to hsl - wide::f32x8	470.1±5.85ns	472.0±9.61ns	+0.40%
Rgb family/rgb to hsv	514.9±9.65ns	512.7±10.76ns	-0.43%
Rgb family/rgb to hsv - wide::f32x8	426.9±5.19ns	427.8±7.05ns	+0.21%
Rgb family/rgb to linsrgb	8.3±0.12µs	8.9±0.11µs	+7.23%
Rgb family/rgb to linsrgb - wide::f32x8	3.4±0.05µs	3.4±0.05µs	0.00%
Rgb family/rgb_u8 to linsrgb_f32	307.1±6.60ns	303.6±4.66ns	-1.14%
Rgb family/rgb_u8 to linsrgb_f64	308.4±4.88ns	308.3±4.67ns	-0.03%
Rgb family/xyz to linsrgb	7.0±0.15µs	6.9±0.09µs	-1.43%
Rgb family/xyz to linsrgb - wide::f32x8	1117.3±17.03ns	1074.7±12.64ns	-3.81%

[Ogeon]

bors r+

[bors]

Build succeeded:

• ci