Standardize workflow names to lowercase

Signed-off-by: Hidde Beydals <hidde@hhh.computer>

.github/workflows/backport.yaml

@@ -1,4 +1,4 @@
-name: Backport
+name: backport
 
 on:
   pull_request_target:

.github/workflows/cifuzz.yaml

@@ -1,4 +1,4 @@
-name: CIFuzz
+name: fuzz
 on:
   pull_request:
     branches:
@@ -12,7 +12,7 @@ permissions:
   contents: read
 
 jobs:
-  Fuzzing:
+  smoketest:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout

.github/workflows/scan.yaml

@@ -1,4 +1,4 @@
-name: Scan
+name: scan
 
 on:
   push:

.github/workflows/sync-labels.yaml

@@ -1,4 +1,4 @@
-name: Sync labels
+name: sync-labels
 on:
   workflow_dispatch:
   push: