feat: update logos (splash, mails)

src/assets/anims/logoLoading.gif

src/assets/icons/email/ecolyo-icon.png

src/assets/icons/email/ecolyoPhone.svg

src/assets/icons/email/feedback.svg

src/assets/icons/email/logo-gouv.png

src/assets/icons/email/logo-grandlyon.png

src/assets/icons/email/logo-territoire.png

src/assets/icons/email/logo-tiga-white.png

src/assets/png/logos_partenaires.svg

src/components/Splash/SplashScreen.tsx

...omponents/Splash/__snapshots__/SplashScreen.spec.tsx.snap

src/components/Splash/splashScreen.scss