Add tool to auto-convert images as webp when running the prod script

src/partners/alliance-libre.md

@@ -1,5 +1,5 @@
 ---
 name: 'Alliance Libre'
-thumbnail: '/images/partners/logo-alliancelibre.png'
+thumbnail: '/images/partners/logo-alliancelibre.webp'
 url: 'http://www.alliance-libre.org/'
 ---

src/partners/coop-tech.md

@@ -1,5 +1,5 @@
 ---
 name: 'Les Coopératives du Numérique'
-thumbnail: '/images/partners/logo-coop-tech.png'
+thumbnail: '/images/partners/logo-coop-tech.webp'
 url: 'https://cooptech.fr/'
 ---

src/partners/fede-cae.md

@@ -1,5 +1,5 @@
 ---
 name: 'Fédération des CAE'
-thumbnail: '/images/partners/logo-fede-cae.png'
+thumbnail: '/images/partners/logo-fede-cae.webp'
 url: 'https://www.les-cae.coop/'
 ---

src/partners/inr.md

@@ -1,5 +1,5 @@
 ---
 name: 'Institut Numérique Responsable'
-thumbnail: '/images/partners/logo-inr.png'
+thumbnail: '/images/partners/logo-inr.webp'
 url: 'https://institutnr.org/'
 ---

src/partners/le-bigre.md

@@ -1,5 +1,5 @@
 ---
 name: 'Le Bigre!Lieu'
-thumbnail: '/images/partners/logo-bigre.png'
+thumbnail: '/images/partners/logo-bigre.webp'
 url: 'https://www.bigrelieu-coop.fr/'
 ---

src/partners/le-pool.md

@@ -1,5 +1,5 @@
 ---
 name: 'Le Poool'
-thumbnail: '/images/partners/logo-lepoool.png'
+thumbnail: '/images/partners/logo-lepoool.webp'
 url: 'https://lepoool.tech/'
 ---

src/partners/reso-solidaire.md

@@ -1,5 +1,5 @@
 ---
 name: 'Réso Solidaire'
-thumbnail: '/images/partners/logo-resolidaire.png'
+thumbnail: '/images/partners/logo-resolidaire.webp'
 url: 'https://www.resosolidaire.fr'
 ---

src/partners/xo-solutions.md

@@ -1,5 +1,5 @@
 ---
 name: 'Xo Solutions Gestionnaire de paie'
-thumbnail: '/images/partners/logo-xo-solutions.png'
+thumbnail: '/images/partners/logo-xo-solutions.webp'
 url: 'https://xo-solutions.fr/'
 ---