fix: mistyped Accept header?

For some reason `forgejo` returns HTML from a comment update request.

action.yml

@@ -81,7 +81,7 @@ runs:
         prs=$(curl -X 'GET' \
                 "$GITHUB_API_URL/repos/$GITHUB_REPOSITORY/pulls?state=open&sort=recentupdate" \
                 -H "Authorization: token $GITHUB_TOKEN" \
-                -H 'accept: application/json')
+                -H 'Accept: application/json')
 
         pr_number=$(echo "$prs" |
                 jq --arg head_ref "$head_ref" '.[] | select(.head.ref == $head_ref) | .number')

comment_on_pr.sh

@@ -140,7 +140,7 @@ if [ -z "$COMMENT_ID" ]; then
   log 'Posting new comment'
   curl -o - -X 'POST' \
     "$GITHUB_API_URL/repos/$GITHUB_REPOSITORY/issues/$PR_ID/comments" \
-    -H 'accept: application/json' \
+    -H 'Accept: application/json' \
     -H "Authorization: token $GITHUB_TOKEN" \
     -H 'Content-Type: application/json' \
     -d "$data"
@@ -148,7 +148,7 @@ else
   log "Editing comment $COMMENT_ID"
   curl -o - -X 'PATCH' \
     "$GITHUB_API_URL/repos/$GITHUB_REPOSITORY/issues/$PR_ID/comments/$COMMENT_ID" \
-    -H 'accept: application/json' \
+    -H 'Accept: application/json' \
     -H "Authorization: token $GITHUB_TOKEN" \
     -H 'Content-Type: application/json' \
     -d "$data"

retrieve-old-report.sh

@@ -5,7 +5,7 @@
 repo_info() {
   curl -X GET \
     -H "Authorization: token $GITHUB_TOKEN" \
-    -H 'accept: application/json' \
+    -H 'Accept: application/json' \
     "$GITHUB_API_URL/repos/$GITHUB_REPOSITORY"
 }
 
@@ -22,7 +22,7 @@ base_report_url() {
   curl -X 'GET' \
     "$GITHUB_API_URL/repos/$GITHUB_REPOSITORY/actions/tasks" \
     -H "Authorization: token $GITHUB_TOKEN" \
-    -H 'accept: application/json' |
+    -H 'Accept: application/json' |
     jq --raw-output \
       --arg name "$JOB_NAME" \
       --arg head_branch "$1" \